1960's Seiko - mechanical wind jump hour. The inside movement is made by the Claro watch company (Chinese co.). During their early production years they outsour…
Jump Hour Watch | BlumSafe
SOLD c1973 Time Recorder Jump Hour mechanical watch - Birth Year Watches
DCVW on Instagram: “This is a quite unique one - a Seiko jump hour! Beginning in 1979, Alba - a sub-brand of Seiko – has continued to produce wristwatches…”
Time Jumpers: Five Luxury Watches with Jumping Hours | WatchTime - USA's No.1 Watch Magazine