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Ships within 48 hours · Estimated delivery Aug 27 - Sep 1
18K gold Oyster case with fluted bezel
It's powered by the Albert Pellaton designed automatic Caliber 8531 movement
among the finest ultra-thin movements ever built
Its case presents as mint with nice thick lugs that have not been overly polished
1973 IWC Large Vintage Mens Caliber 150 Electronic Tuning Fork Watch - Stainless Steel Titanium and stainless steel 18K gold Oyster case withToday's offering features this very cool and rare IWC caliber 150 watch. For the movement the company used a patented tuning fork based movement made by ESA. These watches use a battery driven tuning fork whose vibrations are converted by a special index mechanism into an almost smoothless rotary motion of the hands. At the time, tuning fork watches were the most accurate timekeeping mechanisms ever devised. The tuning fork technology was so accurate
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