Looks like a legit '60s Guild TRC apart from the initials. My Bluesbird's TRC claims the guitar is a Starfire, but I'm guessing it's a fairly late metal version and Guild was just using up stock.
:smile:
Or even George Barnes?
(Not that I think this instrument actually belonged to one of 'em, but possibly a "tribute" thing by an owner?)
But still think most likely it was just an owner's initials and a coincidence about "GB" being the initials of 2 well-known Guild endorsers.