1021 Watch Mainspring 1.65 x 0.10 x 279 (11")(Calibers in description)

Dimensions: 1.65 x 0.10 x 279 (11")

End Type: Tongue End

Material: Swiss Made Unbreakable

Calibers: 

AS 984, AS 1002, AS 1007, AS1009, AS 1010, AS 1013, AS 1015, AS 1021, AS 1024, AS 1027, AS 1028, AS 1029, AS 1032, AS 1033, AS 1035, AS 1038, AS 1041, AS 1043, AS 1044, AS 1048, AS 1050, AS 1055, AS 1077, AS 1084, AS 1089, AS 1091, AS 1113, AS 1114, AS 1118, AS 1120, AS 1123, AS 1124, AS 1128, AS 1135, AS 1141, AS 1147, AS 1153, AS 1154, AS 1160, AS 1161, AS 1166, AS 1211, AS 1218, AS 1231, AS 1259, AS 1264, AS 1277, AS 1285, AS 1313, AS 1377, AS 1440, AS 1800, AS 1801, AS 1802, AS 1803, AS 1940, AS 1941, AS 1942, AS 1943, AS 1950, AS 1951, Bulova 10AZ, Bulova 10WZ, Dugen 1153, Elgini 694, Elgin 695, GP 02, GP 10, Liengme 23-43, Liengme 24, Liengme 24.43, Liengme 25, Liengme 25.43, Liengme 26, Liengme 26.43, Liengme 43, Liengme 46, Liengme 2343, Liengme 2443, Liengme 2543, Liengme 23-2643, Liengme 3051, Lemania DS27, Lemania S27T1, Lemania 2990, Lip 24, HS 237, HS 237AC, HS237AT, HS 237B, HS 237BC, HS 238, Mido 1016/17, Osco 50, Osco 52, Osco 52SC, Osco 55, Osco 56, Osco 100SC, Osco 200, Rotary 440, Silvana 1984-1985, ST 1800, ST 1801, ST 1802, ST 1803, ST 1940, ST 1941, ST 1942, ST 1943, ST 1950, ST 1951, Wittnauer 10B, Wittnauer 10H