I really like the old revamp machines, but I think this one is a bogus Gold Award JP front.
Here’s why;
According to Bueschel, the GA feature was not introduced until later with the Roman Head, after the JP revamps were no longer needed.
The GA mechanism looks to me to be a Mills mechanism cut down to fit.
The bottom lip of the front casting has been broken off to accommodate the GA coin chute.
The GA tokens in the dummy windows are Mills tokens used in their later model machines (this could be excused if the original tokens were lost, if there ever were any).
The GA symbols on the front cast award card are simply paper stickers over the cast-in awards.
The seller does not know who restored this machine and got it from another "collector” as-is.
IMO, the “restorer” took a Jennings revamp and went to elaborate efforts to add a fantasy GA feature. The front casting does not have any part numbers and looks like it may also be recast entirely.