Bought by the current consigner in a second hand store over 20 years ago, it was unknown to him that the dial mounted on the watch was non-original. Despite this, it has developed an attractive patina and with a normal original dial could easily be reverted to a regular 6263 reference. Please note that due to the dial, the watch could not be serviced in its current condition at Rolex. Rolex's Antimagnetic chronograph with triple date was produced in few examples from the mid 1940s to the early 1960s in 18K yellow or pink gold and in very few examples in stainless steel, with various dial designs and hand shapes and with 4 different references: In the mid 1940s: Ref. 4767-From 1948 to 1951: Ref. 5036-From 1951 to 1955: Ref 6036, so-called by collectors the "Killy watch" (after international ski champion Jean-Claude Killy, who first became famous in the 1960s). This reference was produced in 170 examples in yellow gold, 144 examples in pink gold and very few in stainless steel. From 1958 to 1962: Ref. 6236. This current example has been maintained in very good condition featuring an original dial and an attractive patina to the case from remaining untouched in a safety box for many years Jean-Claude Killy (born August 30, 1943) A French Alpine skier and a triple Olympic champion. He was a World Cup champion in 1967 and again in 1968. Killy won the Triple Crown of Alpine Skiing with a sweep of all three gold medals at the 1968 Winter Olympics in Grenoble, France, in the slalom, giant slalom and downhill events. He later even held a position on the Rolex board of directors.