1973 Seiko 5 Automatic 6309-8280 17j Watch
Updated September 15, 2026
| Lot number | 240 |
| Category | Jewelry & Watches |
| 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 |
Vintage 1973 Seiko 5 automatic wristwatch featuring a 37.23mm case size with an offset crown positioned at 4 o'clock and a solid stainless steel screw-down caseback stamped with serial number 390775, movement code reference 6309-8280 [A2], and an EP factory marking code. The silver sunburst dial features block applied indices with inlaid details, a central sweep seconds hand, baton hands, and a framed dual day-date track register at the 3 o'clock mark. The watch is powered by a 17-jewel Seiko caliber 6309A automatic movement and comes paired with an expandable stainless steel mesh link expansion style watch bracelet.This mechanical watch is running as of the time of listing, though a professional service is required for accurate timekeeping, and extended runtime without service is not guaranteed.
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