The Art Of Patek Philippe

Geneva, Apr 09, 1989

LOT 37

Patek Philippe & Cie, Genève, No. 198050-1913, case No. 415938. Made for Henry Graves Jr., New York, sold on the 18.12.1929. Awarded First Prize with 846 points at the Geneva Astronomical Observatory Timing contest 1925- 1926. With photocopy of the Geneva Observatory contest Report. Very important platinum pocket-chronometer with up and down scale.

CHF 30,000 - 40,000

Massive three body "bassine" polished case with invisible hinges, the Henry Graves Coat of armes engraved on the back. Platinum cuvette with the dedication and the Awarded Prize. Mat platinum dial with Breguet numerals, subsidiary seconds and 32 hour up and down scale. Blued steel "Spade" hands. Very fine 19"' unusual caliber three quarter plate rhodium plated movement, "fausses-côtes" decoration, " EXTRA" quality, 21 jewels, straight line lever escapement, brass-Invar Guillaume balance, blue sapphire endstone, 8 adjustments, by H. Wehrli, blued steel, balance-spring with terminal curve and swan neck micrometric index. In mint condition. Diam. 54 mm.


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Notes

Error of compensation per degree C: 0.011. Mean daily position error: 0.11. Rate recovery after extremes: -0.18. Provenance: Henry Graves Jr. collection.