Upon further inspection of my photo, I think what you see on the top face of the guitar above the strings is the reflection of the wall or whatever is on Jim's front-right. The reflection is deformed by the shape of the arch of the guitar top. The reflection begins above the strings and ends just below the f-shaped sound hole.
This is indeed the same guitar as the one Jim is holding in the photo you posted of Jim and Chet. In fact, the two photos may have been taken on the same day. The suit Jim is wearing appears to be the same on both photos.
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