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987 Series

6/0 Sized - 17 Jewels

6/0 size movement with 17 ruby and sapphire jewels, Elinvar hairspring, monometallic balance wheel. Nickel plate and bridges, with precious metal plating. Double roller escapement, improved stem work, improved friction jewelling.

987 | 987F | 987E

 

Grade From To Dates
       
987 2200001 2248000 1926 1927
987 001 025100 1937
987 025101 050200 1937 - 1938
987 050201 075300 1938 - 1939
987 075301 0100400 1939
987 0100401 0125700 1939 - 1940
987 0125701 0149600 1940
987 0149601 0174500 1940 - 1941
987 0174501 0199400 1941
987 0199401 0224300 1941 - 1942
987 0224301 0249200 1942 - 1943
987 0249201 0274100 1943
987 0274101 0298800 1943 - 1944
987 0298801 0323500 1944
987 0323501 0348400 1944
987 0348401 0373500 1944 - 1945
987 0373501 0431200 1946
987 0431201 0469600 1947
987 0469601 0486300 1948
       
987F 2248001 2300000 1927 - 1928
987F 4000001 4025300 1928
987F 4025301 4050400 1928
987F 4050401 4075300 1928 - 1929
987F 4075301 4100200 1929
987F 4100201 4113700 1929
987F 4150001 4150200 1929
987F 4150201 4174900 1929
987F 4174901 4199800 1929 - 1930
987F 4199801 4224500 1930
987F 4224501 4249400 1930
987F 4249401 4274700 1930 - 1931
987F 4274701 4299600 1931 - 1932
987F 4299601 4324500 1931 - 1932
987F 4324501 4349400 1932 - 1933
987F 4349401 4374300 1933 - 1934
987F 4374301 4398200 1934 - 1935
987F 4398201 4423100 1935
987F 4423101 4447300 1935
       
987E 4447301 4448000 1935
987E 4448001 4473100 1935 - 1936
987E 4473101 4498200 1936
987E 4498201 4523000 1936 - 1937