1950s Gruen Precision 17 Jewel N510SS Watch
Updated September 15, 2026
| Lot number | 136 |
| Auction | Vintage watches Omega,Bulova,Hamilton and more |
| Date | September 30, 2026 at 5:00 PM CDT |
| Auction house | Sphere Auctions LLC |
| Location | Sun Prairie, Wisconsin |
Gruen Precision dress watch, manual wind movement stamped Gruen Watch Co, Seventeen 17 Jewels, Unadjusted, Swiss, caliber N510SS. Dial reads GRUEN PRECISION, WATERPROOF. Case back is stamped Gruen Watch Co, Switzerland, Stainless Steel Back on the outer cover, with the case ring itself stamped Swiss Made, Gruen Precision, Base Metal Bezel, Stainless Steel Back, Electronic (the "Electronic" wording is a case marking only; the movement fitted is the standard manual-wind N510SS shown in the movement photos, not an electronic movement). Case measures approximately 34mm excluding crown. Fitted with a stainless steel expansion band. This watch is running as of the time of listing. Service is required for accurate timekeeping, and extended runtime without service is not guaranteed.
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