413
413
The circular dial with dash and Arabic hours, seconds hand, in gold case, c. 1960s
14k yellow gold
Signed Hamilton, Thin-O-Matic
Case 34 mm; Gross weight 24.9 dwts
estimate: $400–600
result: $625
Automatic watch movements, introduced as early as the 1930s, were traditionally thick and then in 1959 along came Hamilton's Thin-o-matic, often housing movements by Buren Watch Company in Switzerland. Hamilton later purchased that factory.