Seiko 6309 Movement Details –– Mizeni
New Old Stock Seiko 5 automatic vintage watch, 6309-5820, casual, elegant & strong watch, 7009A movement, new old stock, gray dial, Baton hands, perfect condition, original bracelet & hang tag
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Vintage Seiko 6309 - 8670 Automatic Mens Watch 1981 | eBay
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Vintage Seiko Automatic 6309-8079 17J Gold Tone Stainless Steel Watch (B13930)
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How accurate is the Seiko 5 Automatic watch movement? Mine loses about one minute per day, and I'm wondering if that is within specs. - Quora
