I’m sure many of you are familiar with this video. I suspect it was shot in connection with the 2009 documentary by Steve Gatlin.
https://youtu.be/GH1K23rAYOQ?si=e503h3GevOQlLAPj
John Blakely is playing a maple neck JM, not common, but within the realm of possibility. Not sure if it’s a Fender or custom build. But what gets me is the hole on the treble side of the neck near the neck pocket. What’s up with that? Some sideways truss Rod adjustment?