The Seiko Quartz-Astron 35SQ can be considered the most important timepiece of modern horological history. So it’s no surprise to see a lot of articles and books discussing it and its impressive legacy. When you read about the Quartz-Astron, one of the first things you’ll probably learn is that only a limited edition of 100 or, depending on the source, around 200 pieces were produced. Let’s start with two of …

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