SEFEA Technical Parts List and Specifications
Technical parts list and specifications for SEFEA watch movement calibers. This reference document covers caliber designations 41, 50, 52, 53, 55, 123, 200, 36 INT, 69-21 INT, 374 INT and related variants, detailing derived caliber relationships, Incabloc shock absorber bloc references, gear module and tooth counts, mainspring specifications, screw gauges and head sizes, and pivot diameters and lengths. Organized by SEFEA production batches from the F-74 and F-74100 Annemasse manufacturing lines. Essential technical reference for watchmakers, movement assemblers, and repair technicians working with these calibers.
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