Seiko's sports timing tradition inspires a new Prospex Speedtimer series. | News | Seiko Watch Corporation
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Seiko S141 Stopwatch online - Justathlete.com
Vol.9 Legibility, accuracy, and functionality. The design of stopwatches. | by Seiko watch design
My newest catch, working vintage Seiko stopwatch. Dial says [90-5060T] and back says [90-5040]. The movement says Seikosha, Seiko branch. I cannot find more details, or production year. Anyone more info? :
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