Balance Cock Part 121 for OTERO 74, 742, 236, 237, 336, 840, 262

Balance cock Part 121/3 for flat hairspring, suitable for OTERO calibers 74, 742, 236, 237, 336, 337, 262 and 840. Replacement part for watchmakers.

Scope of delivery: 1x Part 121/3

Balance cock for flat hairspring

for the following movements:

* OTERO 74, OTERO 742 or

* OTERO 236, OTERO 237, OTERO 336, OTERO 337 or

* OTERO 262

* OTERO 840