Share 'Calling All Vintage Gibson Mandolin Experts'

We have this older Gibson A4 (Appears to be from 1918-22?) in the shop and are uncertain about what it was originally like and what we've got ahead of us in a repair. Maybe some of you who specialize in mandolins have some experience with this particular model. (more below) The owner brought it in because the back is separating from the heel/block area and the action is so high it's unplayable…