You can just see the back peeking out on the right. The braces for top and back are positioned the same distances from the top. No sign that a bridge plate every existed but there is an old bridge outline in the top that indicates that there was a fixed bridge before the oversized one was fitted. There is also a shadow of a tail piece but I don't think it was original. Also take a look at the inside of the sound hole. That's the inner edge of the rosette showing on the right side of the sound hole. They cut that side too deep. Yes, I've got myself a fine quality instrument here!
I'm working on two Bay State parlors at the moment, early 20 century, BR back&sides. Both are opened and gonna have the Martin 1-18 style X-bracing, let me know, if you're interested in the drawings.