ETA SA caliber 6503 is a manual-winding pocket watch movement introduced in 1960. It measures 11½ lignes and features a date complication at 3:00 alongside small seconds at 9:00, with Incabloc shock protection and hacking seconds. The movement was discontinued after the 1960s. It served as the base for Guinand's HS81 caliber, which added a central sweeping seconds hand.
TECHNICAL SPECIFICATIONS
Movement Type
Manual Winding
Display Type
Analog
Winding
Manual
Shock Protection
Incabloc
COMPLICATIONS
Date
FEATURES
Hacking SecondsSmall Seconds
More ETA SA movements
QUICK FACTS
BRAND
TYPE
Manual WindingSTATUS
DiscontinuedLAUNCH YEAR
1960COUNTRY
SwitzerlandALSO KNOWN AS
unitas 6503
FOR WATCH DEALERS
Sell watches powered by the 6503?
Inventory, Chrono24 and eBay sync, and VAT invoicing. Dealer tools are built on this database.