this is an excellent vacheron constantin les historiques moon-phase calendar ref.37159/000p in 950 platinum. comes with a b&s box and the original warranty papers - uk, june 1996. very beautiful re-edtion of a vc 1940s classic. this in no. 13! great collectors item! exquisite gentleman's calendar watch with moon-phase! 12 month of bachmann & scher's warranty!