I realize there's been discussions about the Walker/Gruhn era Guilds from the 90's. I own a GF60 from this period but what is very odd about my guitar is that the neck serial number does not match the body serial number in the sound hole. Someone suggested that mine might have been a prototype or one that was produced for Eric Clapton. I contacted Guild about the serial number issue and the response I received was "I've never seen anything like it". It's a beautiful guitar and it's going to need a neck reset eventually. It's nice having Kim Walker right here in CT.