CHRISTOPHE CLARET PIECE UNIQUE TOURBILLON DE LA ROCHE PLATINUM Christophe Claret, Tourbillon De La Roche, Piece Unique. Made circa 2005. Unique and stunning, platinum and sapphire-set tourbillon wristwatch with a visible one-minute tourbillon regulator movement with a platinum buckle. Two-body, polished, concave lugs and inclined stepped bezel, partially transparent case back with 6 screws engraved with scenery of Chateau de La Roche in Besancon (France), sapphire crystals. Inner bezel ring set with round white diamond indexes and 4 blue sapphires for each quarter. Blued Alpha hands. Cal. CCR97, fausses cotes decoration, 19 jewels, hand-engraved barrel bridge, lateral lever escapement with visible one-minute tourbillon regulator with polished steel cage, monometallic balance, self-compensating flat balance spring.