Large Swiss 18K gold Chronometro Gondolo watch Circa 1910

Gold open faced lever watch by Patek Philippe & Cie
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A heavy Patek Philippe anchor chronometer Gondolo with rare signature Patek Philippe & Antonio H. Maroun Geneva, circa 1910.
Engine turned 18K gold case, artfully engraved monogram HM on the reverse, case number 251719, dust cover signed and numbered, inscribed Chronometro Gondolo. Original enamel dial with a rare double signature, Roman radial hours, outer minutes track with Arabic five minutes numerals, subsidiary dial for the seconds, and gold pear hands. Movement number 148614, extremely fine anchor chronometer movement with chronometer balance, golden running wheels, special fine adjustment and Moustache teeth -Anchor.
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Diameter: 56 mm
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Weight: 146 g
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Signed: Patek Philippe & Cie / Antonio H. Maroun, Geneva