VACHERON CONSTANTIN REF. 7856 LADY'S DIAMOND AND WHITE GOLD Vacheron Constantin, GenËve, movement No. 630632, case No. 448750, Ref. 7856. Made circa 1970. Very fine, rare and elegant, horizontal oval, back-winding, 18K white gold and diamond-set lady's wristwatch with an integral 18K white gold mesh bracelet. Accompanied by the Certificate of Origin. Two-body, solid, polished and brushed, the bezel set with 20 brilliant-cut diamonds, case back with 2 screws, back winder. Matte silver with applied white gold baton indexes. White gold baton hands. Cal. 1430, rhodium-plated, 16 jewels, fausses cotes decoration, lateral lever escapement, monometallic balance adjusted to heat, cold, isochronism and 5 positions, self-compensating flat balance spring, index regulator.