I just bought a Gibson Mandolin-Banjo. The inside label decal inside the rim identifies it as an MB-JR. Also on the inside rim is a set of numbers that are punched into the wood that read 11139A-18.
It plays well. I spent $400 dollars. Too much, too little? I am trying to rationalize my purchase to my wife.
Any one out there that can help me date the instrument? Thanks