Seiko 850 Movement Details
Seiko caliber 850 is a hand winding watch movement produced in the 1960s.
Search eBay for watches with this movement.
|Day / date?||No|
|GMT / world time?||No|
|Number of jewels:||17|
|Size / diameter:||25.6mm (11 1/2")|
- The Ultimate Seiko Alpinist Collectors Guide [thespringbar.com]