SEIKO 5 Sports Speed-Timer 7017-6030 Japan Made 21J Day/Date Men's Vintage Watch | eBay
SOLD ) SEIKO Speed-Timer 5 SPORTS rare waterproof chronograph Ref. 7017.6040 - matt black dial with internal bezel at 60 - complete with rare original bracelet - La Casa dell'Orologio
Flying saucer: the Seiko 6139-7020 Speed-Timer | Adventures in Amateur Watch Fettling