18K rose gold Omega for Boucheron circa 1950's elegant tank design watch, with Boucheron's famous 'invisible' clasp: the strap opens by sliding the gold bar at the top of the watch in and out, creating a sleek one-piece design. The manual wind watch has a champagne dial, 18mm x 30mm rose gold case, in good condition. French hallmark, double signed on case with Boucheron and Omega. 17J movement. Some case discoloration due to age, can be polished out if desired.