Preliminary identification
Photo reference
1 uploaded photo
Overview
This is a classic late-1970s vintage Seiko automatic wristwatch featuring an integrated-style stainless steel tonneau/cushion case and a silver sunburst dial. Powered by Seiko's legendary 17-jewel 6309 workhorse movement, it features an English/Arabic day-date complication at 3 o'clock and the signature Daini factory lightning bolt logo above the 6 o'clock marker.
Story
In the 1970s, internal rivalry between Seiko's Suwa and Daini factories pushed Japanese horology past the Swiss. This rugged 6309 movement became famous for running decades without a single service.
Maker / Origin
Founded in 1881 by Kintarō Hattori in Tokyo, Seiko revolutionized global timekeeping through relentless engineering precision. In the mid-20th century, Seiko split production between two rival internal factories—Suwa and Daini—to spur fierce internal competition and rapid mechanical innovation.
Condition & Value
Visible surface scratching across the stainless steel case, bezel, and crystal. Light scuffing around the day-date frame; hands and dial appear clean. Running condition unknown; surface wear modestly softens top market value.
Full Research
Sold comps, value drivers, and venue guidance pulled from recent auction results.
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Comparable demand stays strongest where maker, originality, and venue confidence line up. Broader examples still trade, but the range tightens quickly when provenance, condition, or selling lane fit is missing.
Best Venue
Specialty auction or a focused dealer with buyers already in this lane.
Signed example with light edge wear and original frame.
Comparable format with stronger provenance and cleaner surface.
Smaller related piece with visible craquelure and trimmed margins.
Period match with softer condition and weaker subject matter.
Close market lane comp with similar material and presentation.