Jim did indeed play a Gibson on occasion and there are photos of him with it.
But you could be right about the make of the guitar he is holding. It's just very strange he'd be playing it on a session. I wonder what song he played this guitar on? Of course, we don't know but what this was just a posed picture for publicity reasons and not a real recording session. Notice there is nobody else in the studio. The photo was shot through the control room window.
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