Beautiful Wood ! Those guys really knew where to source the good stuff.
A competent woodworker would be able to match the edge with the face after a mod, and if it was done in the 80's,
it'll look that much closer since the finishes have been through the same conditions over the years.
Hard to say , but that is some sweet quartersawn maple .
I'll post your other pics inline for ya:
G000548 !! cool !