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Scarce Gruen “Model 710” nurse’s Modern design wristwatch in sterling silver, circa 1922.
The “Model 710” was advertised for nurse’s use and was priced at $32.50. This example is in excellent condition showing only light wear. Caseback is excellent and unengraved. Case measures 31mm long and 27mm wide. Original dial is very good. Has new acrylic crystal. The watch is powered by its correct 15-jewel Gruen Guild grade 826 manual wind movement, just serviced and running strong.