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? :
Seiko stopwatch split second 1964 Tokyo Olympics timer stop watch | eBay
Seiko Digital Countdown Timer and Stopwatch-Yellow, 2.6x8x7 cm : Amazon.co.uk: Home & Kitchen