![Seiko Sports 100 7A28 "First Analog Quartz Chronograph Movement" Vintage Watch Hands-On | aBlogtoWatch Seiko Sports 100 7A28 "First Analog Quartz Chronograph Movement" Vintage Watch Hands-On | aBlogtoWatch](https://www.ablogtowatch.com/wp-content/uploads/2017/06/Seiko-Sports-100-Titanium-7A28-7060-watch-29.jpg)
Seiko Sports 100 7A28 "First Analog Quartz Chronograph Movement" Vintage Watch Hands-On | aBlogtoWatch
![Seiko Sports 100 D Four zero nine 5010 Vintage Databank Digita Watch for Sale in Austin, TX - OfferUp Seiko Sports 100 D Four zero nine 5010 Vintage Databank Digita Watch for Sale in Austin, TX - OfferUp](https://images.offerup.com/HLy9ozmeyQftpY40An_3bLM3Okc=/300x400/20a7/20a7fad9bbfc4db0a2191dc1200356ee.jpg)
Seiko Sports 100 D Four zero nine 5010 Vintage Databank Digita Watch for Sale in Austin, TX - OfferUp
Sold at Auction: Men's Seiko Sports 100 Quartz calendar watch, Serial no. 5D0693, movement 5 H23 6029 A4, in original box, 1980's.
![Seiko Sports 100 7A28 "First Analog Quartz Chronograph Movement" Vintage Watch Hands-On | aBlogtoWatch Seiko Sports 100 7A28 "First Analog Quartz Chronograph Movement" Vintage Watch Hands-On | aBlogtoWatch](https://www.ablogtowatch.com/wp-content/uploads/2017/06/Seiko-Sports-100-Titanium-7A28-7060-watch-31.jpg)