I own a PS2000FLM CRB. The production number is blank on the certificate. My guitar was made in August of 1999. Does anyone know why the production number wouldn't have been written on the cert? Guitars made after mine have numbers assigned. I have heard of other certs that didn't have numbers written in and the reason suggested was that Paul had severed his relationship with Washburn but that isn't the case regarding my guitar. Anyone else out there with unsigned certs? Thank in advance!