Asserting it was stolen ... not a probably, only a possibility. Anyone can assert anything and these days theres a whole cultural artifacts belongs to the legal abstraction of the society thing so that they cannot leave even if they can be traded around locally ... there are people who would call exporting things stealing based on that.
Also, Floyd didnt commit armed robbery. He passed a bogus bill. He didnt go to jail but seems to have died from drugs and preexisting conditions. You must be referring to someone else but have Floyd on the Brain like so many folks. So actually no big, typos happen and stuff like that there.
As for lying to the government, why not? It doesnt obey the Constitution and is not legitimate for much of what it lawlessly does as a result. It also lies to the people all the time: never trust it even when you can verify.
Our founding fathers knew better than to trust central government to do anything more than what it alone could do that the States couldnt do. People trusting it and faithless men like FDR is what enabled it to grow into the obscenity it is. Wed be better off in cases like this not caring and not taxing and therefore not having whole layers of unnecessary federal government.
That quality of mosaic goes on the open market for far more then $12,000. Any museum would be glad to pay four or five times that for it. If you are talking private collector you are talking up to a million.
Yes, Floyd did commit armed robbery. That was not his first brush with the law. You need to look up his past. So, not a typo.
You should not lie to the government because it renders the social contract null. You have the right to be silent, but not the right to lie.
The founding fathers were in favor of both tariffs and punishment for perjury.