Rare Swiss trip minute repeating two train lever Circa 1912

A very rare Swiss 18 carat gold open faced trip minute repeating two train keyless lever watch, circa 1912. 17/18”’ Manual winding nickel two train lever movement, cut bimetallic compensation balance, repeating on 2 gongs, 33 jewels. Silvered dial, applied gold Breguet numerals and hands and subsidiary seconds. Minute repeating function through the crown. Case, dial and movement signed. With a Patek Philippe Extract from the Archives confirming production with applied hour markers in gold in 1912 and sale on November 20th, 1946.