SIGNED ROLEX, PERPETUAL, OFFICIALLY CERTIFIED CHRONOMETER, REF. 8171, MOVEMENT NO. 10'482, CIRCA 1950

This reference 8171 is a very well preserved example of a "Padellone" (as collectors affectionately call the legendary model due to its large size for the time). Rolex has produced only two different models of moonphase wristwatches, references 8171 and 6062. Although both models are automatic, reference 8171 has a snap on back, while reference 6062, the Oyster version, is fitted with a water-resistant-type screw back.