Serial # 68Z32949---Browning 20 gauge with 26 inch IC barrel. I assume this is a 1968 gun, but what does the Z stand for. I got a chance to buy this gun for $400. It is 85% with cracked forearm--receiver and barrel look good. Is This gun worth $400? Went to the browning ID site and doesn't say what the Z stands for in the serial number.