Rare Swiss white gold open faced slim lever Circa 1966

A rare and slim white 18 carat gold open faced keyless lever watch, circa 1966. Cal. 175 manual winding nickel lever movement, Gyromax balance, 18 jewels. Silvered dial with applied baton indexes. Plain case, large bezel, snap on case back. Case, dial and movement signed. With a Certificate of Origin dated 1968, an Extract from the Archives confirming sale on August 12th 1968 and a presentation case.
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