![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? : 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? :](https://preview.redd.it/0x261m7m7cg71.jpg?width=2970&format=pjpg&auto=webp&s=44114005de35a3e07c103d6b379c14d381ccece3)
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? :
![売り切り 特価スタート ストップウォッチ SEIKO 89ST ラリータイマー仕様 ダッシュボードタイマー 機械式手巻き*|DEJAPAN - Bid and Buy Japan with 0% commission 売り切り 特価スタート ストップウォッチ SEIKO 89ST ラリータイマー仕様 ダッシュボードタイマー 機械式手巻き*|DEJAPAN - Bid and Buy Japan with 0% commission](https://auctions.c.yimg.jp/images.auctions.yahoo.co.jp/image/dr000/auc0109/users/4/3/2/1/mcraft777-img1200x1200-1600476009ifetoa21739.jpg)
売り切り 特価スタート ストップウォッチ SEIKO 89ST ラリータイマー仕様 ダッシュボードタイマー 機械式手巻き*|DEJAPAN - Bid and Buy Japan with 0% commission
![1964 year Tokyo Olympic official clock SEIKO 89ST 1/100 second machine 1/100 second measurement world most high precision. machine stopwatch : Real Yahoo auction salling 1964 year Tokyo Olympic official clock SEIKO 89ST 1/100 second machine 1/100 second measurement world most high precision. machine stopwatch : Real Yahoo auction salling](https://auctions.c.yimg.jp/images.auctions.yahoo.co.jp/image/dr000/auc0506/users/ec45affcfe80e29d61d6e800ee85256f14db6479/i-img1024x768-1560698102a1sje1705830.jpg)