this is a very good lecoultre/vacheron constantin, mysterieuse, 14k white gold. manufactured in the 1930s-1940s, this watch has a diamond set dial with a so called ?mysterieuse" hour and minute indicator. the hour markers and hand have original diamond setting. collectors item! the case is a vacheron one with a jlc movement - typical for these years. 12 month of bachmann & scher`s warranty!