I say a "real" mystery because most of the time it's just a Norlin model or something. This one is really a head scratcher. https://loviesguitars.com/product/used-gibson-les-paul-custom-sg-1961-reissue-white-1991/ So the seller claims it's a 1991 1961 Reissue. My first two guesses were; something based on the 1992 1967 Reissue or a 1991 Custom with a batwing added. But it can't be either of those because the serial number is the custom shop format. It dates to 1998, but the heel design is that of a '61 Reissue, while by 1998, the Historic Custom was introduced already with the Historic heel design. Why would this not have it, then? That and the beveling not being as deep as a Historic make it obvious the body is from a '61 Reissue. Also, I can't quite make out whether the neck binding is the thin Historic style or not. Anybody?