![Vintage Seiko] Ultra-thin steel Seiko Sports 100 "AP Royal Oak" look-alike...but who came first? : r/Watches Vintage Seiko] Ultra-thin steel Seiko Sports 100 "AP Royal Oak" look-alike...but who came first? : r/Watches](https://preview.redd.it/urw0rfqnxm941.jpg?width=640&crop=smart&auto=webp&s=6ea245f2770208ddfb3df038123d7f19ebff4139)
Vintage Seiko] Ultra-thin steel Seiko Sports 100 "AP Royal Oak" look-alike...but who came first? : r/Watches
![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-33.jpg)
Seiko Sports 100 7A28 "First Analog Quartz Chronograph Movement" Vintage Watch Hands-On | aBlogtoWatch
![Seiko Sports Chronograph 100 "Seiko Speedmaster" for $650 for sale from a Private Seller on Chrono24 Seiko Sports Chronograph 100 "Seiko Speedmaster" for $650 for sale from a Private Seller on Chrono24](https://cdn2.chrono24.com/images/uhren/28885192-4r9s7y9puikzw8rcapu7yvxu-ExtraLarge.jpg)
Seiko Sports Chronograph 100 "Seiko Speedmaster" for $650 for sale from a Private Seller on Chrono24
![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)