digits. Between 1962 and 2007 Omega used the Mapics system, consisting of two letters followed by either six or seven numbers. The PIC system started in 1988, running concurrently with Mapics, and featured an arrangement of eight numbers in three groups (XXXX.XX.XX). Finally, today we have the PIC14 structure, with 14 digits in six groups. Notable models The Omega wristwatch Ref. H6582/D96043 (1960) once owned by Elvis Presley was sold in auction by Phillips for 1.812 million US dollars in Geneva on May 12, 2018, making it the most expensive Omega timepiece ever sold at auction. The watch was manufactured in 1960 and was sold by Tiffany & Co. in 1961. The watch was presented to Elvis Presley as a gift from RCA Records on February 25, 1961, to commemorate his remarkable achievement of having sold 75 million records. Petros Protopapas, the director of Omega Museum, later confirmed that the museum was the winning bidder. The Omega Stainless Steel Tourbillon 301 was sold in auction by Phillips for around 1.43 million US dollars (1,428,500 CHF) in Geneva on November 12, 2017. It was then the most expensive Omega timepiece ever sold at auction. In March 1965, the Omega Speedmaster was declared “Flight Qualified for all Manned Spaced Missions." On July 20, 1969, Buzz Aldrin stepped onto the Moon wearing his Omega Speedmaster watch. The model of the first watch on the Moon is the Omega Speedmaster 105.012. Historic events Space exploration The selection of the "Omega Speedmaster Professional Chronograph" for American astronauts was the subject of a rivalry between Omega and Bulova. All subsequent crewed NASA missions also used this handwound wristwatch. NASA started selecting the chronograph in the early 1960s. Automatic chronograph wristwatches were not available until 1969. Even so, all the instrument panel clocks and time-keeping mechanisms in the spacecraft on those space missions were Bulova Accutrons with tuning fork movements, because at the time NASA did not know how well a mechanical movement would work in zero gravity. First watch on the Moon The Omega Speedmaster Professional Chronograph was the first watch on the Moon, worn by Buzz Aldrin. Although Apollo 11 commander Neil Armstrong was first to set foot on the moon, he left his 105.012 Speedmaster inside the Lunar Module as a backup because the LM's electronic timer had malfunctioned. Aldrin elected to wear his, making his Speedmaster the first watch worn on the moon.