I have a set of 4 from a 1960 or 1961 from a SGLP I never used after I bought them off that guy on eBay that has a lot of vintage Gibson parts he sells. Let me know if your interested and I can take ohm readings and some pictures for you. The project I bought them for a few years ago never happened. I also have a set of NOS Centralab pots from 1973 that are identical to the old ones. I'd think about selling those also.