Fine Swiss gold open faced watch Circa 1926 encased in 1936

Yellow gold open faced watch by Patek Philipp
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Fine Swiss gold open faced watch by Patek Philippe, circa 1926 encased in 1936.
Manual winding nickel lever movement, twice stamped with the seal of Geneva, cut bimetallic compensation balance, black dial, applied Arabic numerals and painted indexes, eccentric seconds, outer minute track, 18k yellow gold Murat-style case, snap-on back, case, dial and movement signed.
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Diameter: 44.5 mm
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Signed: Patek Philippe & Cie Genèva
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With an Extract from the Archives confirming the black dial and that the movement was made in 1926, encased in 1936 and sold in 1937 and a leather pouch.