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
Seiko Seikomatic 6206-8040 Vintage 26 Jewels Automatic Mens Watch Auth Works - Japan Pre-owned Vintage
SEIKO Automatic Watch DX 6106-8060 SEALION DAY DATE 25 jewels (1969) | eBay