Swiss gold pocket watch with high finishing movement Circa 1920

Gold five-minute repeating pocket watch
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A very fine, thin Swiss, five-minute repeating, keyless, 18K gold pocket watch with “Extra” movement, circa 1920. Made for Tiffany & Co. Accompanied by the extract from the archives. A solid, polished case, concealed hinge, the back with engraved monogram. Hinged gold cuvette. A frosted champagne dial with champlevé Breguet numerals, outer minute track, subsidiary seconds dial. Blued steel Breguet hands. A high finishing, rhodium-plated movement, Geneva striping decoration, 31 jewels, wolf’s tooth winding, counterpoised straight-line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, index regulator, repeating on gongs activated by a slide on the band. Dial signed for Tiffany, case and movement signed Tiffany & Co. case and movement signed made for Tiffany & Co. by Patek Philippe & Co.
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Diameter: 48 mm
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Signed: Patek Philippe & Cie.  Genève
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The inscription “Extra” on the bridge of the movement refers to the high finishing of all the parts of the movement.