Details
100 spring bars, watchmaker quality. Size: 7, 8, 9, 10, 12, 14 with body 1,4 mm and pivot 0,75mm, 15, 16, 17, 18, 19 and 20 mm with body 1,8mm and pivot 0,9 mm. Beco Technic (Beco Technic, germany).
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