What would be a fair amount of cash to add on to the 82Z to make worth the same as a 1939 10M? The 82Z is near-immaculate, 5-ish years old, original pads, no significant damagae, plays fantastic, comes in Walt Johnson case. The 10M I don't know much about but I'm assuming original lacquer (over brass, not plated), in excellent playing condition, good pads, needs no work to play. I think the seller is asking $2700 for the 10M. The 82Z is not worth that much AFAIK, so what would make the trade fair?