Late 60s early 70s. Seiko automatic DX 17 jewels 6106-8439 and Seiko automatic 17 jewels 7005-8040. Picked up for $10 each. Still keeping good time. : r/Seiko
A Vintage Seiko DX 6106 - 8040 Gents Watch. Day/date - - Dec 13, 2021 | Cadmore Auctions in Hertfordshire
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VINTAGE SEIKO DX Sealion 6106 8040 Day Date Automatic Mens Watch £46.05 - PicClick UK