The Collection of a European Nobleman

Geneva, May 11, 2008

LOT 521

Sinn, Frankfurt, Model 900, No. 900.0173. Sold on January 25th, 2006. Fine, large, stainless steel, self-winding, water-resistant wristwatch with roundbutton chronograph, registers, 24-hour bezel for independent second-time-zone doubling as a north-determining navigational aid, solar direction indicator, pulsometer, breathcounter indication, tachometer, telemeter, march counter, date, engraved Imperial to Metric conversion charts and strap with stainless steel buckle. Accompanied by a warranty card and instructions. To be sold without reserve

C. Three-body, brushed, flat bezel, screwed-down case back laser engraved with conversion charts from Imperial to Metric, screweddown winding crown, concave lugs, button at 10 to operate the rotating 24-hour scale. D. Black with luminous baton hour indexes, outer seconds and fifths of a second divisions, inner red telemeter scale, outer tachometer, pulsometer and breath-counter scales, outer rotating inclined scale for 24-hours, subsidiary dials for the seconds, the 30-minutes and 12-hour registers, aperture for the date. Luminous baton hour and minute hands, independently adjustable yellow arrow hand for the second time zone. M. Cal based Valjoux 7750, rhodiumplated, fausses-cotes and oeil-de-perdrix decoration, 25 jewels, straight-line lever escapement, monometallic balance, self-compensating flat balance spring, shock absorber, micrometer regulation. Dial, case and movement signed. Diam. 44 mm. Thickness 16 mm.