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A tribute to a watchmaking revolution. The 50th anniversary of the Quartz Astron is celebrated in a limited edition GPS Solar watch. | News | Seiko Watch Corporation
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Seiko 1969 Quartz Astron 50th Anniversary Limited Edition
The History of Seiko Watches - A Selection Of Iconic Japanese Timepieces | WatchGecko
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THE EARLY SEIKO QUARTZ: FROM SQ TO QZ - Montres Publiques - The vintage watch magazine
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The History of Seiko Through 12 Milestone Seiko Watches | WatchTime - USA's No.1 Watch Magazine
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