Important Collectors’ Wristwatches, P...

New York, The Grand Havana Room, Sep 20, 2006

LOT 236

"World?s Smallest Tourbillon Automatique" Audemars Piguet, Genève, "Tourbillon Automatique", No. 70. Made circa 1987. Very fine, thin, self-winding, rectangular "galbé", 18K yellow gold gentleman's wristwatch with visible one-minute tourbillon regulator and oscillating weight, with an 18K yellow gold Audemars Piguet deployant clasp.

C. Three-body, solid, polished and brushed, stepped bezel, small teardrop lugs, back-winder, sapphire crystal. D. Yellow gold with embossed "Sun Ray" pattern, gold dot indexes for the hours, apertures for the visible tourbillon regulator with polished steel bridge at 11 and at 6 for the oscillating weight with the initials "AP". Black oxydized gold "feuille" hands. M. Cal. 11'?', hand engraved, 32 jewels, straight-line lever escapement with visible one-minute tourbillon regulator with titanum cage, monometallic balance, selfcompensating flat balance-spring. Crystal and movement signed. Case numbered. Dim. 29 x 33 mm. Thickness 5.5 mm.