The Les Paul Gibson Custom that the late-Les Paul gifted Paul McCartney in 1988 is now up for auction. According to Guitar.com, "Inclusive of its original hard case, the guitar -- which is still in playing shape -- will be auctioned off in July as part of Heritage Auctions' Guitars and Musical Instruments Signature Auction. Bids are currently accepted, starting at $40,000 and the auction is slated to conclude on July 17th."
Les Paul had intended on presenting the guitar to McCartney when the Beatles were inducted into the Rock and Roll Hall of Fame in January 1988, but with McCartney proving a no-show, he had to wait until McCartney passed through Manhattan again and presented him with the axe on May 3rd, 1988.
Other than holding the guitar for a few taped promotional appearances, McCartney was never seen using the guitar during any live performances and it's unclear whether he ever recorded with the instrument.