In 2011, we were introduced to the Omega Speedmaster Moonwatch “Apollo 15” 40th Anniversary Limited Edition to commemorate the 40th anniversary of the Apollo 15 mission. It is a classic Moonwatch: it has a polished and brushed stainless steel case and bracelet, a black aluminum ring with a tachymeter scale on the bezel, and a domed shatterproof hesalite crystal. Its three subdials are arranged in true Speedmaster Professional fashion on the black dial: the small seconds at 9 o’clock, the 12-hour counter at 6 o’clock and the 30-minute counter at 3 o’clock. There are also some features which distinguish the Apollo 15 40th Anniversary model from the classic Speedmaster Professional. This Limited Edition timepiece has a minute track in blue, white and red – the three colors of the Apollo 15 patch. There is a blue ring around the small seconds subdial; there are white and red rings around the 12-hour and 30-minute counters respectively. The screw-in caseback is embossed with an image of the Lunar Rover and the words “APOLLO 15” and “40th ANNIVERSARY”. The outer circle of the caseback is black chrome engraved with “THE FIRST WATCH WORN ON THE MOON”, “JULY 30, 1971” and the limited edition number.