Blancpain, "Concept 2100", "Half Hunter Moon Phase Calendar", No. 12/200. Produced in a limited edition of 200 pieces in 2001.Very fine and rare, hunter case-type, astronomic, self-winding, water-resistant, 18K pink gold gentleman's wristwatch with triple date calendar, moon phases, 100 hours power reserve and an 18K pink gold Blancpain buckle. Accompanied by an 18K pink gold setting pin. four-body, solid, polished, hinged covers, front with porthole, screwed-down transparent inner case back to view the movement, signature engraved on the band, rounded stepped bezel, straight lugs, sapphire crystals. "guilloché" silver in "Sunray" pattern with applied pink gold pyramidal indexes, outer graduation for the days of the month, apertures for the days of the week, the months and the moon phases, auxiliary seconds dial. "Feuille" pink gold hands. Cal. 6763, rhodium-plated, "fausses côtes" decoration, 31 jewels, straight line lever escapement, monometallic balance adjusted to 5 positions, shock-absorber, self-compensating flat balance-spring, engraved 18K gold rotor.Dial, case and movement signed.Diam. 39 mm.