RX (Generic)
Nivaflex automatic mainsprings for wristwatches (Bestfit)
Nivaflex mainsprings from Boley for automatic winders.
Nivaflex mainsprings from Boley for automatic winders.
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name3992x
width1.45
Ø11.8
thickness0.112
calibreRX 4130 (Generic)
item No.82039920