A rare model! Searches on the web gave no hits on exactly this reference: 135.012SP. The attractive intact black dial with red Omega logo and red crosshairs has full lume hour markers, and the hour and minute hands are just as perfectly lumed! The manual 17 jewel Omega caliber 601 movement (“Adjusted two (2) positions”), has the serial number 27021006 (which dates it to ca 1967). The “Waterproof” stainless steel case has a diameter of 32,5mm. A similiar watch, without the red logo and crosshairs, and of the more common reference 135.011 was sold in Los Angeles at over $2000. This super, rare vintage watch has been fully serviced (August 2020), and carries a 12 months watchmaker warranty.