Possibly unique Swiss gold complicated lever Circa 1922/1959

Gold open faced complicated watch by Patek Philippe
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A possibly unique, fine and rare Swiss 18 carat gold open faced minute repeating perpetual calendar split-seconds chronograph with moon phases, circa 1959. The movement was made in 1922 and cased in 1959 (reference 767). Sold on 7 July 1959. Lever movement. Silvered dial, applied gold baton indexes, gold Dauphine hands, four subsidiary dials for the months combined with constant seconds, days of the week and date, moon phases combined with a 30-minute register, outer scale calibrated for 60 units with fifths of a second division. Dial signed, case and movement signed and numbered. Comes with the original presentation box and an Extract from the Archives confirming the production of the movement of this watch in 1922.
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Diameter: 50 mm
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Signed: Patek Philippe Genève Swiss
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In the late 1950s, Patek Philippe discovered a number of complicated movements from the early 20th century. This small number of movements was cased in modern cases made by Antoine Gerlach. It is easy to distinguish the similarity between the pocket watches cased in the same period with sharp edges and straight case lines. This piece is extraordinarily rare, only seven examples are known. Each example has a slightly different case. Consigned by a highly important collector, no other example with this case design can be found, rendering this watch a possibly unique example.