I'm a new member and this is my second post. I just picked up a 1955 Rolex Oysterdate. I'll try to attach pictures). I'm 99% sure it's real based on the owner. My question is regarding the serial number. At the 6 It has Brevet 6294. At the 12 It has 18259. I can identify the reference number and model but the serial number indicates it was a pre 1926 model? Can someone help me or refer me to a good source of information. Thanks Peter P.s. I'm bringing it in tomorrow for repair.