I can offer my 2 cents....
A couple of years ago a Hispanic woman brought her deceased husbands 45 ACP Brazilian contract in to my friends FFL.
She wanted to consign it with a price of $1000 ... it had been professionally refinished ( allegedly by S&W themselves ) could be ? it was quite nice, with new walnut N frame coke bottle grips.
Nice as it was, $1000 was too steep in my opinion ....being refinished & Brazilian contract dating it and the grips being totally wrong.
I considered $650-700 as fair if not a bit generous to the widow
There was no provenance the revolver was anything other than her husband's prized refinished possession , he was not a Brazilian Generalissimo or Colonel or any other such notable.
I was not alone in my opinion and after a few other offers, "she" decided to pull it off consignment.