I know
CNG has a database of their sold coins that goes back a long while. I think other
auction houses, as well as many dealer's maintain sold databases. I know
Forum deletes prices from sold coins, but most don't. I don't know how many keep data at all, but many do. Literally the only thing I don't like about
Forum is deleting the prices of sold coins. I understand the rationale, I just don't agree with it. But, I accept it.
Virgil