Vintage GRUEN men’s automatic watch 480/831 10K GF Concentric-circle dial 1952

Year: 1952. Automatic Self-Wind watches use a semi-circular weighted rotor to generate motion. Dial: Good condition for its age. To initiate the power reserve, the watch must be wound manually. Turn the winding crown, in a clockwise direction for about 8 to 12 revolutions.

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