Large Swiss 18k gold minute repeating lever watch Circa 1975

Gold open faced minute repeater by Patek Philippe
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A very fine and large Swiss 18 carat gold open faced minute repeating keyless lever pocket watch, movement made in 1912, completed and cased in 1975. Sold on April 29, 1976. Rhodium-plated movement, Geneva Striping decoration, 31 jewels, wolf’s tooth winding, counterpoised straight-line lever escapement, cut bimetallic compensation balance adjusted to heat, cold, isochronism and five positions, blued steel Breguet balance spring, swan-neck micrometre regulator, repeating on gongs activated by a slide on the band. White enamel dial with Breguet numerals, outer minute track, subsidiary seconds and original blued steel spade hands.  Plain case. Dial, case and movement signed, case numbered. Accompanied by the Extract from the Archives.
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Diameter: 56 mm
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Signed: Patek, Philippe & Cie Genève