Omega balance staff 18''' 185 (ht.609) Arbor 135

Omega 185  18'''  balance staff

Neuf de stock / New old stock

It is not for the caliber 185 17'''

Flume code U323 -  18'''   -  (height 609 , half-height 315 , balance arbor 135 , hairspring collet 90 , roller 67)

It exists a difference between this staff from Flume and the same staff from Ronda code 3359. The balance arbor given by Ronda is 130, and the balance arbor of the Flume book is 135. Please, before purchase, control your own broken staff to check it is really 135.