1950s Gruen Men's Swiss Gold 17j Calendar Watch Vintage Rare 510 Dial Self Wind

Pretty uncommon Gruen precision vintage men's watch. Winds up and carries time. Extremely clean for age, looks to relatively unworn!

Please see photos for additional details. Inside is scuffed so I can't read full number, looks to say 510 - - - RCA or CA. Reach out with any questions you may have, thanks!

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