never seen before
I think it's a borrowed one
at this kind of gig Mark (like all others musicians) could not have his whole proper gear like he had on tour, so there was some guitars/amps/effects shared by several artists I guess, and this one could be one among others...
I can't recognize the model
I believe it's at the same gig that Mark used the burn-baldwin-12strings and the sunburst schecter strat
Why did he use this specific guitar on this song ?