Cal. 205 is a chronometer-grade chronograph movement which was reserved for Olympic timers. These timers were likely used at the 1968 Mexico Olympics, where Omega was the official timekeeper and sent 45 of these, and as such, remained Omega’s property at the time. An interesting fact is that they were noted in the archives as being delivered to their Swiss agent Gameo on February 6, 1956. It is also interesting to note that out of the 6 still packaged in their original boxes, four have the yellow numbering on the dial: 300, 303, 306 and 307 denoting their use at the Olympics. This set was purchased by the original buyer’s family and was acquired at Omegamania, lot 82, April 15, 2007. It has been stored untouched since its purchase.