CHRISTOPHE CLARET REF MTR.MBA13 KANTHAROS WHITE GOLD and TITANIUM Christophe Claret, Kantharos, Le Locle, Case no. OGA111MBA13, Ref. MTR.MBA13. Made circa 2013. Very fine, large and unusual, self-winding, 18K white gold and titanium, chiming single-button chronograph and constant force escapement with a titanium Christophe Claret double deployant clasp. Accompanied by a fitted box, certificate, instruction booklet, and travel pouch. Three-body, polished and brushed, single-button chronograph activating the chime during every transition between functions, transparent back with 6 screws, sapphire crystals. Anthracite, outer minute track with white and red alternating 5-minutue markers, Arabic and baton indexes, subsidiary counters for 30 minutes and hour indications. Constant Force aperture at 6. Black and red PVD-coated luminous baton hands. Rhodium-plated, fausses cotes decoration, sapphire bridge with gold chaton, 75 jewels, straightline lever escapement, self-compensating flat balance spring, shock absorber, modified swan-neck micrometer regulator, chronograph functions accompanied by a cathedral gong.