This is why I play reissues. I have no quarrel with those who acquired a desirable instrument when they were not "vintage" and now wish to cash in. That's fine, that's the market, that's human nature. I myself sold a '63 Gretsch Chet Atkins Country Gent for many multiples of its sub-$500 purchase price without a qualm.
But that lovely (even if refin) '57 doesn't speak to me in the dulcet tones of thirteen large. I don't know of a bass that would be worth that much, to me.
I just kinda wish we musicians still had access to the old gems.
So I play reissues. I love the early Fender designs, but not the early Fender prices.
Good luck to him. It sounds like he's had a rich musical life, and why shouldn't he get a little back? We had a gentleman around here who had Paul Bigsby make him a solid-body electric mandolin back in the late '40s, who financed a well-deserved retirement in his '70s by selling it for $50K.
So God bless him, and God speed.
Gotta go pick up my '50s Classic P....