VINTAGE WATCH UNITAS 6365.N PART WATCH. 307 hairspring holder N.O..S

Balance Complete Unitas 190 Borel Watchmakers NOS

Unitas 520 BALANCE COMPLETE 721/819 NOS Fits Unitas 510, Unitas 521 Read!

Unitas 6360 Click watch part #425 fits 540 550 580 630 6365 6470...

Unitas UT 520 Balance Complete 721 Watch Part

Unitas 233 Watch Balance Hairspring watch part balance spring

Unitas UT 190 Balance Complete 721 Watch Part

Unitas 640 650 Watch Balance Hairspring 6300 6303 6305 6340 6343 6460