Vol.9 Legibility, accuracy, and functionality. The design of stopwatches. | by Seiko watch design
QHY001Y Seiko Stopwatch Timer Clock
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? :
ストップウオッチ | セイコーウオッチ
Seiko] Seiko Stopwatch 8n00190 Pocket watch Stainless steel silver hand -rolled unisex white dial – KYOTO NISHIKINO