18 | 922 | 15J, open face | unadjusted | single | 15 | 1900 | 102001 | 103000 | 1904 | 1904 | 1,000 | Grade 922 later assigned certain 12s mvts. |
18 | 923 | 15J, hunting | unadjusted | single | 15 | 1900 | 95001 | 96000 | 1905 | 1917 | 1,000 | Grade 923 later assigned certain 10 size movements including the 923 Masterpiece. |
18 | 924 | 17J, open face | unadjusted | single | 17 | 1899 | 98001 | 1450500 | 1926 | 1930 | 128,553 | includes Union open face |
18 | 924GT | 17J, open face, gilt trim | unadjusted | single | 17 | 1904 | N.A. | 982500 | 1913 | 1918 | 11,750 | Copper Gilt |
18 | 925 | 17J, hunting | unadjusted | single | 17 | 1899 | 49401 | 1415000 | 1919 | 1922 | 65,623 | includes Union hunting |
18 | 925GT | 17J, hunting, gilt trim | unadjusted | single | 17 | 1902 | N.A. | 950200 | 1912 | 1918 | 7,993 | Copper Gilt |
18 | 926 | 17J, open face | temp. only | single | 17 | 1895 | 5101 | 1442500 | 1923 | 1924 | 53,134 | includes Union Special & Banner open face |
18 | 926GT | 17J, open face, gilt trim | temp. only | single | 17 | 1902 | N.A. | 960000 | 1913 | 1918 | 30,918 | |
18 | 927 | 17J, hunting | temp. only | single | 17 | 1895 | 16201 | 917000 | 1912 | 1922 | 33,079 | includes Union Special & Banner open face |
18 | 927GT | 17J, hunting, gilt trim | temp. only | single | 17 | 1902 | N.A. | 926100 | 1912 | 1918 | 16,598 | |
18 | 928 | 15J, open face | unadjusted | single | 15 | 1895 | 18001 | 112200 | 1899 | 1900 | 4,997 | |
18 | 929 | 15J, hunting | unadjusted | single | 15 | 1895 | 17001 | 97900 | 1899 | 1917 | 5,900 | |
18 | 930 | 16J, open face | unadjusted | single | 16 | 1894 | 4001 | 89000 | 1899 | 1899 | 4,200 | |
18 | 931 | 16J, hunting | unadjusted | single | 16 | 1894 | 3001 | 48000 | 1899 | 1899 | 4,000 | |
18 | 932 | 16J, open face | adjusted | single | 16 | 1893 | 21 | 10450 | 1895 | 1899 | 600 | test note |
18 | 933 | 16J, hunting | adjusted | single | 16 | 1893 | 1021 | 9900 | 1895 | 1899 | 650 | sample note |
18 | 934 | 17J, open face | temp. only | single | 17 | 1894 | 4301 | 617000 | 1909 | 1917 | 6,413 | |
18 | 935 | 17J, hunting | temp. only | single | 17 | 1894 | 3101 | 631000 | 1909 | 1920 | 4,700 | |
18 | 936 | 17J, open face | five positions | single & d | 17 | 1893 | 1 | 1401000 | 1915 | 1927 | 23,597 | |
18 | 937 | 17J, hunting | five positions | single & d | 17 | 1893 | 1001 | 670100 | 1914 | 1921 | 8,306 | |
18 | 938 | 17J, open face | five positions | double | 17 | 1894 | 6601 | 291000 | 1907 | 1918 | 2,198 | |
18 | 939 | 17J, hunting | five positions | double | 17 | 1894 | 7601 | 16000 | 1903 | 1918 | 1,320 | |
18 | 940 | 21J, open face | five positions | single & d | 21 | 1898 | 44001 | 1448200 | 1928 | 1937 | 209,498 | GT & SF |
18 | 941 | 21J, hunting | five positions | single & d | 21 | 1898 | 15301 | 1414300 | 1920 | 1925 | 26,704 | GT & SF |
18 | 942 | 21J, open face | five positions | double | 21 | 1898 | 44401 | 979100 | 1914 | 1919 | 5,913 | |
18 | 943 | 21J, hunting | five positions | double | 21 | 1898 | 43301 | 239500 | 1908 | 1919 | 2,700 | |
18 | 944 | 19J, open face | five positions | double | 19 | 1905 | 426501 | 553000 | 1908 | 1918 | 6,590* | includes 90 mvts, changed from grade 936, 2 styles of motor barrel |
18 | 946 | 23J, open face | five positions | double | 23 | 1904 | 434601 | 1409500 | 1921 | 1927 | 10,692 | |
18 | 947 | 23J, hunting | five positions | double | 23 | 1910 | * | * | 1916 | 1917 | 310 | serial nos. taken from grade 943 standard barrel and motor barrel |
18 | 948 | 17J, open face | three positions | double | 17 | 1912 | 971701 | 1430400 | 1920 | 1920 | 1,500 | |
18 | 7J | 7J, open face | unadjusted | single | 7 | 1894 | 2001 | 3000 | 1896 | | | additional group 23,201-500 not shown as sold |
18 | 11J | 11J, open face | unadjusted | s | 11 | 1898 | 23301 | 23500 | 1903 | | 125 | incomplete data for this group |
18 | 11J | 11 jewel, hunting | unadjusted | single | 11 | 1896 | 25001 | 137100 | 1902 | | 250 | |
16 | 950 | 23 jewel, open face; bridge, lever set | five positions | double | 23 | 1910 | 775501 | 2611400 | 1936 | 1936 | 18,473* | includes mvts changed from grades 950 (P) & 952 (L) |
16 | 950 | 23 jewel, open face; bridge, pendant set | five positions | double | 23 | 1909 | 750201 | 1575900 | 1925 | 1929 | 4,400* | at least 200 of these mvts changed to grade 950 lever set |
16 | 950E | 23J, open face bridge lever set | five positions | double | 23 | 1937 | 2611401 | 2650600 | 1941 | 1941 | 7,000 | Elinvar hairspring |
16 | 950B | 23J, open face bridge lever set | six positions | double | 23 | 1942 | S001 | S29500 approx. | 1968 | 1968 | 29,600 approx. | new design Elinvar extra hairsprg.
S series numbers plus 100 examples 2B701 to 2B800 |
16 | 951 | 23J, hunting bridge lever set | five positions | double | 23 | 1913 | * | * | 1918 | 1918 | 97 | grade 951 mvts bear nos. of grade 961 mvts from which they were modified |
16 | 951 | 23J, hunting bridge pendant set | five positions | double | 23 | 1913 | * | * | 1918 | 1918 | 44 | |
16 | 952 | 19J, open face bridge lever set | five positions | double | 19 | 1909 | 750701 | 1626000 | 1924 | 1929 | 5,644* | 168 mvts ch fr grade 952 (P), 324 ch to grade 950 (L) |
16 | 952 | 19J, hunting bridge pendant set | five positions | double | 19 | 1909 | 752001 | 1153200 | 1923 | 1925 | 1,331* | 168 mvts ch to grade 952 (L) |
16 | 954 | 17J, open face 3/4 plate lever set | five positions | double | 17 | 1910 | 797201 | 1036800 | 1913 | 1930 | 2,700 | |
16 | 954 | 17J, open face 3/4 plate pendant set | five positions | double | 17 | 1910 | 799001 | 1052900 | 1913 | 1923 | 1,898 | |
16 | 956 | 17J, open face 3/4 plate pendant set | adjusted | single | 17 | 1914 | 1130501 | 1717800 | 1924 | 1930 | 51,298 | |
16 | 960 | 21J, open face bridge lever set | five positions | double | 21 | 1905 | 324001 | 1154000 | 1915 | 1921 | 3,000 | |
16 | 960 | 21J, open face bridge pendant set* | five positions | double | 21 | 1896 | 50061 | 755000 | 1911 | 1919 | 2,160 | includes positive setting models made before 1907 |
16 | 961 | 21J, hunting bridge lever set | five positions | double | 21 | 1906 | 325101 | 750200 | 1909 | 1918 | 1,100* | includes 97 mvts changed to grade 951 (L) 1913 to 1916 ** |
16 | 961 | 21J, hunting bridge pendant set* | five positions | double | 21 | 1896 | 51061 | 82000 | 1908 | 1918 | 1,310* | postive set only incl 44 mvts ch to grade 951 (P) 1914 |
16 | 962 | 17J, open face bridge pendant set | positions | double | 17 | 1896 | 50001 | 50400 | 1897 | 1913 | 350 | positive set only |
16 | 963 | 17J, hunting bridge pendant set * | positions | double | 17 | 1896 | 51001 | 51400 | 1898 | 1913 | 380 | positive set only |
16 | 964 | 17J, open face bridge pendant set | adjusted | single | 17 | 1896 | 50011 | 69000 | 1904 | 1918 | 340 | positive set only |
16 | 965 | 17J, hunting bridge pendant set * | adjusted | single | 17 | 1896 | 51011 | 325100 | 1907 | 1918 | 410 | positive set only |
16 | 966 | 17J, open face 3/4 plate pendant set* | adjusted | double | 17 | 1898 | 52491 | 58400 | 1898 | 1906 | 307 | positive set only |
16 | 967 | 17J, hunting 3/4 plate pendant set* | adjusted | double | 17 | 1897 | 53901 | 59500 | 1899 | 1904 | 300 | positive set only |
16 | 968 | 17J, open face 3/4 plate pendant set* | adjusted | single | 17 | 1896 | 52001 | 352100 | 1907 | 1918 | 1,037 | positive set only |
16 | 969 | 17J, hunting 3/4 plate pendant set* | adjusted | single | 17 | 1896 | 53001 | 331500 | 1905 | 1918 | 930 | positive set only |
16 | 970 | 21J, open face 3/4 plate pendant set* | five positions | double | 21 | 1901 | 70201 | 348200 | 1910 | 1918 | 2,810 | positive set only |
16 | 971 | 21J, hunting 3/4 plate pendant set* | five positions | double | 21 | 1901 | 71201 | 333700 | 1907 | 1917 | 2,500 | positive set only |
16 | 972 | 17J, open face 3/4 plate pendant set* | adjusted | single | 17 | 1896 | 52011 | 58600 | 1898 | 1901 | 945 | positive set |
16 | 972 | 17J, open face 3/4 plate pendant set* | adj, 5 pos. | s&d | 17 | 1900 | 62001 | 1551900 | 1921 | 1924 | 11,485* | negative set incl approx. 200 gilt trimmed models |
16 | 972 | 17J, open face 3/4 plate lever set | adj, 5 pos. | s&d | 17 | 1904 | 316201 | 1647600 | 1924 | 1927 | 35,702* | incl approx. 600 gilt trimmed models |
16 | 973 | 17J, hunting 3/4 plate pendant set* | adjusted | single | 17 | 1896 | 53021 | 341200 | 1907 | 1918 | 6,640* | positive set incl some gilt trimmed models |
16 | 973 | 17J, hunting 3/4 plate lever set | adj, 5 pos. | s&d | 17 | 1905 | 347301 | 1083000 | 1914 | 1918 | 3,620* | includes some gilt trimmed models |
16 | 974 | 17J, open face 3/4 plate pendant set* | temp. | single | 17 | 1897 | 52251 | 2477000 | 1928 | 1930 | 203,170 | negative set after serial #719,001 |
16 | 974GT | 17J, open face 3/4 plate gilt trimmed | temp. | single | 17 | 1903 | 306701 | 1329000 | 1919 | 1922 | 14,780 | |
16 | 974 | 17J, open face 3/4 plate lever set | temp. | single | 17 | 1905 | 332801 | 2462000 | 1927 | 1930 | 79,545 | |
16 | 974GT | 17J, OF 3/4 plate gilt trim pendent set | temp. | single | 17 | 1905 | 346401 | 1310000 | 1919 | 1922 | 14,005 | |
16 | 974 | Special, 17J OF 3/4 plate pendant set | three posit. | double | 17 | 1928 | 2526001 | 2548700 | 1939 | 1940 | 11,500 | |
16 | 974 | Special, 17J, OF 3/4 plate lever set | three posit. | double | 17 | 1927 | 2490001 | 2566892 | 1939 | 1940 | 12,903 | |
16 | 975 | 17J, hunting 3/4 plate pendant set* | temp. | single | 17 | 1897 | 53501 | 1577100 | 1924 | 1926 | 57,148 | includes both positive & neg set |
16 | 975GT | 17J, hunting GT 3/4 plate pendant set* | temp. | single | 17 | 1903 | 311101 | 1325600 | 1918 | 1924 | 14,500 | includes both positive & neg set |
16 | 975 | 17J, hunting 3/4 plate lever set | temp. | single | 17 | 1905 | 347201 | 1099000 | 1914 | 1918 | 22,515 | |
16 | 975GT | 17J, hunting GT 3/4 plate lever set | temp. | single | 17 | 1906 | 355501 | 1052200 | 1913 | 1918 | 9,058 | |
16 | 976 | 16J, open face 3/4 plate pendant set* | temp. | single | 16 | 1896 | 52301 | 85000 | 1903 | 1913 | 4,460 | positive set |
16 | 977 | 16J, hunting 3/4 plate pendant set* | temp. | single | 16 | 1897 | 53071 | 83400 | 1903 | 1904 | 5,730 | positive set |
16 | 978 | 17J, open face 3/4 plate lever set | three posit. | double | 17 | 1912 | 891601 | 1688500 | 1924 | 1927 | 24,500 | |
16 | 990 | 21J, open face 3/4 plate lever set | five positions | s&d | 21 | 1903 | 302001 | 1321300 | 1919 | 1920 | 16,490 | double roller after 302,201 |
16 | 991 | 21J, hunting, 3/4 plate lever set | five positions | double | 21 | 1905 | 347181 | 717200 | 1908 | 1918 | 2,520 | |
16 | 992 | 1st model: 21J, open face 3/4 pl lever set | five positions | s&d | 21 | 1903 | 302101 | 1085800 | 1914 | 1919 | 104,067* | includes 272 gilt trim & 908 special finish |
16 | 992 | 2nd model, 21J, OF 3/4 plate lever set | five positions | double | 21 | 1914 | 1085801 | 2584300 | 1931 | 1936 | 438,213* | includes 1300 special finish |
16 | 992 | 1st model, 21J OF 3/4 plate pendent set | five positions | double | 21 | 1912 | 886001 | 1019401 | 1916 | | | |
16 | 992 | 2nd model, 21J OF 3/4 plate pendant set | five positions | double | 21 | 1917 | 1019401 | 1671900 | 1923 | | 6,100 | |
16 | 992E | 3rd model (Elinvar) 21J open face 3/4 plate lever set | five positions | double | 21 | 1931 | 2581001* | 2655300 | 1940 | 1940 | 63,497 | first 2,500 were converted from grade 992 |
16 | 992B | 21J, open face 3/4 plate lever set | six positions | double | 21 | 1940 | C001 | C525169* | 1968 | 1970* | 525,169* | See page |
16 | 993 | 1st model 21J hunting, 3/4 plate lever set | five positions | s&d | 21 | 1905 | 347001 | 1051800 | 1913 | 1914 | 11,480* | includes 248 gilt trim & special finish |
16 | 993 | 2nd model, 21J hunting 3/4 plate lever set | five positions | double | 21 | 1914 | 1051801 | 1536000 | 1920 | 1923 | 6,700 | |
16 | 993 | 2nd model, 21J hunting 3/4 plate pendant set | five positions | double | 21 | 1920 | 1555001 | 1557000 | 1924 | 1926 | 2,000 | |
16 | 994 | 21J, open face bridge lever set | five positions | double | 21 | 1913 | 1080201 | 1155500 | 1919 | 1920 | 800 | |
16 | 994 | 21J, open face bridge pendant set | five positions | double | 21 | 1914 | 1153301 | 1155101 | 1919 | 1920 | 301 | |
16 | 996 | 19J, open face 3/4 plate lever set | five positions | double | 19 | 1915 | 1156001 | 1613600 | 1927 | 1933 | 23,500 | |
16 | 998 | 23J, open face bridge lever set | adjusted | double | 23 | 1928 | B648001 | B652700 | 1928 | 1928 | 4,700 | |
16 | 998B | 23J, open face bridge lever set | adjusted | | 23 | | | | | | | |
16 | 999 | 21J, open face 3/4 plage lever set | adjusted | double | 21 | 1910 | B600001 | B655000 | 1928 | 1928 | 28,950 | |
16 | 999B | 23J, open face 3/4 plate lever set | adjusted | double | 23 | 1943 | 1B001 | 2B700 | 1954 | 1954 | 28800 | Last 1B number is 1B25300 |
16 | 999 | 23J, open face bridge lever set | adjusted | double | 23 | 1911 | B601001 | B655200 | 1928 | 1928 | 9,650 | |
16 | HWW | 17J, open face pendant set | adjusted | double | 17 | 1897 | 76000 | 76800 | 1898 | 1900 | 399 | |
16 | HWW | 17J, hunting 3/4 plate pendant set | adjusted | single | 17 | 1897 | 76001 | 76799 | 1898 | 1900 | 321 | |
16 | HWW | 19J, open face bridge lever set | adjusted | single | 19 | 1904 | 275000 | 275500 | 1909 | 1918 | 44 | |
16 | HWW | 17J, open face bridge pendant set | adjusted | single | 17 | 1897 | 75000 | 176000 | 1903 | 1918 | 350 | |
16 | HWW | 21J, open face bridge lever set | adjusted | single | 21 | 1904 | 175000 | 275500 | 1906 | 1915 | 206 | |
16 | HWW | 21J, open face bridge pendant set | adjusted | single | 21 | 1904 | 175001 | 176000 | 1905 | 1910 | 250 | |
12 | 400 | 21J, bridge | five positions | double | 21 | 1929 | H1001 | H3500 | 1932 | 1938 | 2,300 | Illinois ancenstry (Illinois grade 528 +) |
12 | 900 | 19J, bridge | five positions | double | 19 | 1909 | 1750001 | 1937300 | 1923 | 1930 | 24,700 | Fits Waltham style case |
12 | 902 | 19J, bridge | five positions | double | 19 | 1923 | 3050001 | 3060800 | 1928 | 1931 | 9,600 | Fits regular style case |
12 | 904 | 21J, bridge | five positions | double | 21 | 1927 | 3061001 | 3065100 | 1936 | 1938 | 4,100 | Fits regular style case |
12 | 910 | 17J, 3/4 plate | adjusted | double | 17 | 1914 | 1778201 | 1988500 | 1923 | 1931 | 153,793 | Fits Waltham style case |
12 | 912 | 17J, 3/4 plate | adjusted | double | 17 | 1923 | 3200001 | 3460900 | 1936 | 1937 | 260,900 | Fits regular style case |
12 | 914 | 17J, 3/4 plate | three positions | double | 17 | 1912 | 1761001 | 1989400 | 1923 | 1933 | 43,100 | Fits Waltham style case |
12 | 916 | 17J, 3/4 plate | three positions | double | 17 | 1923 | 3100001 | 3133800 | 1928 | 1935 | 33,800 | Fits regular style case |
12 | 918 | 19J, 3/4 plate | three positions | double | 19 | 1927 | 3135001 | 3152700 | 1936 | 1938 | 17,700 | Fits regular style case |
12 | 920 | 23J, bridge | five positions | double | 23 | 1911 | 1765001 | 1922000 | 1924 | 1935 | 13,600 | Fits Waltham style case |
12 | 922 | 23J, bridge | five positions | double | 23 | 1923 | 3000001 | 3056000 | 1927 | 1936 | 14,300 | Fits regular style case |
12 | 922MP | 23J, bridge | five positions | double | 23 | 1925 | 3002301 | 3013700 | 1936 | 1936 | 2,600 | Masterpiece model |
10 | 917 | 17J, 3/4 plate | three positions | double | 17 | 1936 | X001 | X215000 | 1956 | | 215,000* | approximate |
10 | 921 | 21J, bridge | five positions | double | 21 | 1936 | H001 | H55000 | 1956 | | 54,000* | approximate |
10 | 923 | 23J, bridge | five positions | double | 23 | 1937 | R001 | R4100 | 1956 | | 4,100* | Production is approximate. Some watches furnished in special 18K cases marked Masterpiece in the case not on the movement. |
10 | 945 | 23J, 3/4 plate | five positions | double | 23 | 1956 | NSN | | 1968 | | 27,500* | approximate |
0 | 981 | 17J, hunting 3/4 plate | | double | 17 | 1919 | 2035001 | 2037200 | 1923 | 1930 | 2,200 | |
0 | 982 | 17J, open face, bridge | three positions | double | 17 | 1909 | 1250001 | 1257000 | 1919 | 1919 | 1,286 | grade 982 identical to 983 except absence of sec. scale |
0 | 983 | 17J, hunting, bridge | three positions | double | 17 | 1908 | 1250001 | 1257000 | 1919 | 1927 | 4,614 | |
0 | 984 | 19J, open face, bridge | three positions | double | 19 | 1909 | 1252001 | 1257900 | 1919 | 1919 | 548 | grade 984 identical to 985 except absence of sec. scale |
0 | 985 | 19J, open face, bridge | three positions | double | 19 | 1909 | 1252001 | 1257900 | 1919 | 1930 | 1,352 | 984 with short 4th wheel arbor and no seconds indication |
6/0 | 979 | 19J, open face | | | 19 | 1927 | 2900001 | 2911500 | 1930 | | 11,510 | |
6/0 | 979F | 19J, open face | | | 19 | 1929 | 2911601 | 2931900 | 1934 | | 20,290 | friction jeweled |
6/0 | 986 | 17J, open face | | | 17 | 1915 | 2001701 | 2064900 | 1923 | | 56,900 | |
6/0 | 986A | 17J, open face | | | 17 | 1923 | 2100001 | 2191300 | 1927 | | 91,300 | |
6/0 | 987 | 17J, hunting | | | 17 | 1926 | 2200001 | 4190000* | 1930 | | 213,657* | approximate |
6/0 | 987A | 17J, hunting | | | 17 | 1937 | O1 | O486300 | 1948 | | 486,300* | includes military production |
6/0 | 987E | 17J, hunting | | | 17 | 1935 | 444730l | 4523000 | 1937 | | 75,700 | Elinvar hairspring |
6/0 | 987F | 17J, hunting | | | 17 | 1930 | 4190001 | 4447300 | 1935 | | 257,299 | friction jeweled |
6/0 | 987S | 17J, hunting | | | 17 | 1940 | SS 001 | SS 87400 | 1948 | | 87,400* | Sweep seconds included |
6/0 | 988 | 17J, open face | | | 17 | 1913 | 2000001 | 2002800 | 1917 | | 2,098 | |
8/0 | 730 | 17J | | | 17 | 1955 | NSN | NSN | 1963 | | | Incabloc |
8/0 | 735 | 18J | | | 18 | 1955 | NSN | NSN | 1963 | | | sweep sec, Incabloc, screw bal |
8/0 | 736 | 18J | | | 18 | 1963 | NSN | NSN | 1963 | | 48,500 | sweep sec, Incabloc, screwless bal |
8/0 | 747 | 17J | | | 17 | 1947 | Y001 | Y453800 | 1955 | | 453,800 | |
8/0 | 748 | 18J | | | 18 | 1948 | CY001 | CY232000 | 1955 | | 232,000 | sweep sec |
12/0 | 401 | 19J | | | 19 | 1930 | H50001 | H57500 | 1933 | | 7,500 | |
12/0 | 752 | 17J | | | 17 | 1951 | 001E | 48000E | 1954 | | 48,000 | |
12/0 | 753 | 19J | | | 19 | 1952 | 001F | 103400F | 1955 | | 103,400 | |
12/0 | 754 | 19J | | | 19 | 1952 | 001H | 43900H | 1955 | | 43,900 | |
12/0 | 770 | 22J | | | 22 | 1955 | NSN | NSN | 1970 | | 310,000 | Incabloc |
14/0 | 980 | 17J | | | 17 | 1934 | G101 | G669400 | 1951 | | 614,300 | |
14/0 | 980A | 17J | | | 17 | 1935 | G13601 | G68600 | 1936 | | 55,000 | |
14/0 | 980B | 17J | | | 17 | 1937 | A001 | A8900 | 1946 | | 8,900 | |
14/0 | 982 | 19J | | | 19 | 1935 | J1001 | J670600 | 1951 | | 669,600 | |
14/0 | 982M | 19J | | | 19 | 1940 | M001 | M201900 | 1951 | | 201,900 | Medallion model |
18/0 | 989 | 17J | | | 17 | 1928 | E001 | E114000 | 1934 | | 114,000 | |
18/0 | 989E | 17J | | | 17 | 1935 | E114001 | E140400 | 1936 | | 26,400 | |
20/0 | 997 | 17J | | | 17 | 1936 | L101 | L165000 | 1941 | | 164,900 | |
21/0 | 75 | 17J | | | 17 | 1957 | NSN | NSN | 1960 | | 200,000 | gilded plates |
21/0 | 77 | 17J | | | 17 | 1960 | NSN | NSN | 1961 | | 220,000 | gilded plates, KifFlector |
21/0 | 721 | 17J | | | 17 | 1939 | N001 | N532200 | 1949 | | 532,200 | |
21/0 | 750 | 17J | | | 17 | 1950 | 001A | 914000A | 1954 | | 914,000 | |
21/0 | 751 | 17J | | | 17 | 1950 | 001C | 139700C | 1954 | | 139,700 C | |
21/0 | 756 | 19J | | | 19 | 1954 | 001K | 24500K | 1954 | | 24,500 | |
21/0 | 757 | 22J | | | 22 | 1955 | NSN | NSN | 1963 | | 1,740,000 | |
21/0 | 758 | 22J | | | 22 | 1962 | NSN | NSN | 1967 | | | |
21/0 | 761 | 22J | | | 22 | 1963 | NSN | NSN | 1968 | | 410,000 | KifFlector, flat hairspring, screwless balance |
21/0 | 780 | 17J | | | 17 | 1963 | NSN | NSN | 1969 | | 890,000 | gilded plates, KifFlector, Spirotor, flat hairspring, screwless balance |
21/0 | 995 | 17J | | | 17 | 1931 | F101 | F63800 | 1934 | | 63,700 | |
21/0 | 995A | 17J | | | 17 | 1934 | F57601 | F286200 | 1939 | | 279,000 | |
5L | 767 | 22J | | | 22 | 1967 | NSN | NSN | 1972 | | | |
5L | 768 | 17J | | | 17 | 1967 | NSN | NSN | 1973 | | | |
22/0 | 911 | 17J | | | 17 | 1938 | T001 | T783000 | 1950 | | 783,000 | |
22/0 | 911M | 17J | | | 17 | 1941 | V001 | V127200 | 1950 | | 127,200 | Medallion model |
16 | 2974B | 17J, open face, pendent set | three positions | double | 17 | 1941 | K004 | 2K13500* | 1948 | * | 16095 | *Records as of 12/31/1948. Seconds setting comparing watch. K001-K003 finished as 974B |
16 | 3992B | open face, pendent set | six positions | double | 22 | 1942 | 3C001 | 3C2800 | 1945 | 1945 | 2494 | Seconds setting, Center seconds, 12 hour dial. All serial numbers may not have been finished. |
16 | 4992B | open face, pendent set | six positions | double | 22 | 1941 | 4C001 | 4C114000 | 1954 | * | 96082 | Seconds setting, Center seconds, 24 hour dial. All serial numbers may not have been finished. Some remaining inventory of plates finished as 992B |
16 | 23 | open face, pendent set | three positions | double | 19 | 1943 | P001 | P27700 | 1954 | * | 25291 | Chronograph, Navigation Time & Stop Watch. All serial numbers may not have been finished. |
35 | 22 | open face, safety pendent set | 6 pos, temp, isoch | double | 21 | 1942 | 2F001 | 2F28400 | 1948 | * | 28127 | * Records as of 12/31/1948. Chronometer Watch. Mounted in both gimbals or base metal OF case. |
85 | 21 | Marine Chronometer, spring detent, Invar and Stainless Steel "Ovalizing" balance | temperature | detent | 14 | 1942 | 2E001 | 2E12300 | 1955 | * | 10793 | * Records as of 12/31/1948. Marine Chronometer, 12 hour dial. All serial numbers may not have been finished. |
85 | 121 | Marine chronometer, spring detent, Invar and Stainless Steel "Ovalizing" balance, 24 hour display | temperature | detent | 14 | 1943 | 3E001 | 3E040 | 1947 | * | 40 | * Records as of 12/31/1948. Marine Chronometer, 24 hour dial. |
85 | 221 | Marine chronometer, spring detent, Invar and Stainless Steel "Ovalizing" balance "4 orbit" calendar display* | temperature | detent | 14 | 1945 | 4E001 | 4E015 | 1950 | * | 15 | * Records as of 12/31/1950. Marine Chronometer, Individual Orbit dial used for work crossing International Date Line |
36 | M36 | open face | five positions | double | 21 | 1918 | 1260001 | 1260970 | 1943 | 1943 | 970 | Chronometer Watch, mounted in both gimbals or silver OF case. |
None | None | Nothing known about this run | none | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | This is the catchall for serial runs with model unk |
6/0 | 2987 | 17J Hunting, Sweep seconds military watch | | | 17 | 1943 | 3S001 | 3S15000 | 1945 | 1945 | 15000 | Grade 987 adapted to center seconds for military use. A11 contract (needs to be verified). |
50 | 25 | Timer air AN-5741-1 Beryl-X balance, Elginium HS 16J with jeweled center sweep. | 2 pos | | 16 | 1943 | 2H001 | 2H21678* | 1944 | 1944 | 15641 | Information from Whitney last ser # from ledger. Beryl-X balance and Elginium hairspring (Elgin supplied escapements) |
18 | 999A | Nickel, 21 Jewels, Double Roller, Ball Regulator, “Sun-burst” Damascening. | Adjusted | Double | 21 | 1898 | 28601 | 670000 | 1911 | | 14100 | Marked “Official RR Standard” or Brotherhood Markings. |
18 | 999B | Nickel, 17 Jewels, Double Roller, Ball Regulator. Circular Damascening. | Adjusted | Double | 17 | 1895 | 13001 | 170400 | 1902 | | 3645 | Equivalent to Hamilton Grade 938. Marked “Official RR Standard” or Brotherhood Markings. |
18 | 999C | Nickel, 17 Jewels, Adjusted, Double Roller, Ball Regulator, Hamilton Hairspring Stud. | Adjusted | Double | 17 | 1896 | 14126 | 42200 | 1898 | | 265 | Exclusive designation for Brotherhood of Railroad Trainmen. Special “Brakewheel” Damascening Pattern |
18 | 999D | Nickel, 17 Jewels, Adjusted, Double Roller, Ball Regulator, Hamilton Hairspring Stud. | Adjusted | Double | 17 | 1895 | 13021 | 42100 | 1898 | | 290 | Exclusive designation for Brotherhood of Locomotive Firemen. Special Damascening Pattern. |
18 | 999E | Nickel, 17 Jewels, Single Roller, Ball Regulator, Circular Damascening Pattern. | Adjusted | Single | 17 | 1896 | 20501 | 285000 | 1903 | | 1450 | These Were Single Roller Movements For Use on Railroads Having Less Stringent Inspection Requirements. |
18 | 999F | Nickel, 16-17 Jewel, Single Roller, Ball Regulator. Diagonal Line Damascening Pattern. | Adjusted | Single | 16 | 1896 | 20801 | 170900 | 1902 | | 800 | Some marked Railroad Watch Co. or Commercial Standard |
18 | 999 | Nickel, 19 Jewels, Adjusted, Ball Regulator, Double Roller, Circular Damascening Pattern. | 19 | Double | 19 | 1906 | 497001 | 669500 | 1911 | | 4400 | Marked “Official RR Standard” or with Brotherhood Markings. |
18 | 999H | 17 Jewels, Adjusted, Ball Regulator, Double Roller, Circular Damascening. | Adjusted | Double | 17 | 1904 | 456001 | 923500 | 1911 | | 8100 | Replaced 999B. Marked “Official RR Standard” or With Brotherhood Markings. |
18 | 999 | 23 Jewels, Nickel, Adjusted, Motor Barrel, Double Roller, with Ball Regulator and (1908 Patent) Hairspring Stud. | Adjusted | Double | 23 | 1910 | 644301 | 644400 | 1910 | | 100 | Marked “Official RR Standard” Adjusted 5 Positions, Double Roller, Motor Barrel. Ball (1908 Patent) Hairspring Stud. |
16 | Illinois | Illinois serial number error catcher | | | 0 | | | | | | | Watches with B800000 serial numbers are Illinois, not Hamilton |
16 | Waltham | Catch Waltham watches entered in error | | | 0 | | | | | | | Watches with serial numbers below B600001 were made by Waltham |