The scrap dealer, should have just made an excuse, stepped away and called the police at that time.
I was watching "American Picker" one night, and they had found an very,very old cross from a cemetery, can't remember if it had a name. They bought it because of course they could sell at a profit to some decorator, disgusting, and he thought it was cool. Don't watch them anymore
Anyway, I think there really should be a law on dealing in grave markers, just as Ivory tusks. There is no need in anyone owning these things.
The very old grave markers are beautiful and I love seeing them. What despicable people to steal these things.