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IWC pocket-watch Cal. 77

IWC pocket-watch Cal. 77

1,450.00 €

IWCPocket-watch open
at 1920
Steel-case (Acier/Staybrite Steel)
Caliber 77 – 17linig H4  21 Jewels
complensation-screw-balance, Breguet-overcoil-balance-spring
index-spring-precision-adjustment
Diameter of case: approx. 46mm
Total weight: approx. 54,5g
very rare exemplare of movement with 21 jewels!