Quartz-Astron, the world's first quartz watch
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1969: Seiko's Breakout Year | WatchTime - USA's No.1 Watch Magazine
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Astron (wristwatch) - Wikipedia
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Introducing: The 1969 Quartz Astron 50th Anniversary Limited Edition - HODINKEE
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Seiko Watches on Instagram: “Good Morning #WatchFam! A couple weeks ago, I had the opportunity to travel to Japan for an in… | Seiko watches, Seiko, Vintage watches
How many Astron were really produced?
