The Private Collection of Theodor Beyer

Hotel Baur Au Lac, Zurich, Nov 16, 2003

LOT 108

Patek, Philippe & Cie., Genève, No. 161227, circa 1912, made for Tiffany. Extremely fine and rare 18K gold keyless pocket chronometer "EXTRA", with specially adjusted Guillaume balance. Accompanied by the Extract from the Archives.

C. Four-body, "bassine", polished, hinged gold cuvette with dedication inscription. D. White enamel, Breguet numerals, outer minute track, sunk subsidiary seconds. Blued steel "spade" hands. M. 41 mm. (18.5'''), patented bridge caliber, 23 jewels, straight line calibrated lever escapement, ruby banking pins, anibal-brass Guillaume balance with "winged" arms, gold temperature adjustment screws and platinum mean time screws, special alloy Breguet balance spring with inner and outer terminal curve, swan-neck micrometer regulator.Dial, case and movement signed by Tiffany, movement and case signed by Patek Philippe.Diam. 57 mm.