771 Mainspring 1,45mm x 0,105 mm x Ø 9 mm non Automatic: for Amida 532,  AS 488, Benrus J, Bulova 10B, Bulove 10L, Derby-D 33, ETA 84, FHF 28, MST 202, Peseux 350

771 Mainspring 1,45mm x 0,105 mm x Ø 9 mm non Automatic: for Amida 532,  533, 537, 538, 552, 553
AS 488, 489, 665, 714, 720, 740, 760, 798, 881, 938, 1086
Benrus J, Bulova 10B, Bulove 10L, Derby-D 33, 37, 43, 44,
ETA 84, 98, 128,  376, 377, 378, 379, 381, 382, 383, 384, 389, ETA 605,
FHF 28, FHF 28-2, FHF 28-3, FHF 87, FHF 88,
MST 202, 229, 253, 271, 277, 303, 337, 433, 434, 435
Peseux 30, 32, 33, 34, 35, 36, 37, 38, 39, 350, 355, 370, 380, Peseux 385,