In Jack Bruce’s (Cream bassist) 1998 instructional film titled The Cream of Cream Gary appeared as a guest guitarist, and perhaps as a nod to Clapton picked up an unusual instrument for him – a Gibson SG. The film features interviews with Jack and separate segments during which the bend composed of Jack, Moore, and Gary Husband performed some of Cream’s best-known songs.
Gary’s guitar was most likely a 1961 Gibson SG reissue model, based on how mint the finish looked on the footage. It could also be that this is an original 1960s model with the vibrola removed, as a pair of screw holes seem to be visible from a specific angle.
If you happen to come across any more info about this guitar, be sure to leave a comment below.
Bernie Marsden told in an interview with Lee Anderton that Gary borrowed his Les Paul (SG) for two years when the headstock came off Greeny. Could be it?
https://youtu.be/L6V8htfnkvc?si=-gOcTkGUYNS8skjE&t=1251 There it is.