In reply to Wendy Solis.

A serial number of 66288 could correspond to either 1938 or 1954 (Rolex restarted their serial number system before switching to the letter w/ 7-digits system, and then later a random serial number system). Depending on the reference, you can tell whether it is a 1938 or a 1954 model, although due to the greater number of watches produced during 1954, there is a fairly good chance that it is from then rather than 1938.