47 Hammer. First off, you'll want to carefully clean the paint off of your stamp pad to confirm that it is an original stamp (broaching and comparing partial VIN to tranny partial VIN - as they are stamped at the same time, if applicable). These are supposed to be left unpainted anyway. A solvent such as paint thinner or brake fluid carefully applied should do the trick - avoid wire brushes as it may deface the stamping pad area. Errors between paperwork (POPs, build sheets, etc) and the actual stampings on the car are more common than you may think. So, it is not out of the realm of possiblity. The smart guys will chime in here, but the stamp pad is stamped for application (not partial VIN) at the factory where the engine is assembled at the time of assembly. The POP would be stamped at the car assembly factory - so if the stamp pad was misread the error could be introduced at the time the POP was made. Post a picture after you clean your stamp pad and post a picture of your tranny partial VIN if you have one.
