The Art Of Patek Philippe

Geneva, Apr 09, 1989

LOT 38

Patek Philippe & Cie, Genève, No. 198311, case No. 417380, sold on the 29.7.1935. Awarded First Prize at the Geneva Astronomical Observatory Timing contest 1933-1934 with 872 points, with a photocopy of the Observatory contest report. Specially made for Henry Graves Jr. New-York with original fitting case. Highly important small platinum pocket chronometer with one minute Tourbillon regulator.

CHF 250,000 - 300,000

Massive triple body "bassine" polished case with invisible hinges, the back engraved with the Henry Graves coat of arms. Platinum cuvette, engraved with the dedication and the Awarded Prize. Mat platinum dial wlth Empire Roman numerals and subsidiary seconds. Blued steel "Spade" hands. Superb 17"' rhodium plated movement, bearing the Geneva quality mark, "Extra" quality, "fausses-côtes" decoration, 18 jewels, two gold screwed settings, one minute Tourbillon with polished steel equidistant armed carriage, equilibrated lateral lever escapement, brass-Invar Guillaume balance, 3 heat and cold isochronism and five position adjustments by François Modoux, blued steel balance-spring with terminal curve and swan neck micrometric index. In mint condition. Diam. 48 mm.


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Notes

With 872,2 points this chronometer kept for several years the precision world record. Error of compensation per degree c: 0.016. Mean error summed over 40 days: 6.08. Mean error in 6 positions: 2. Rate recovery after extremes: +0.12. Provenance:Henry Graves Jr. Collection.