Yes. Google records a number of problems with Antiques Roadshow. Which doesn't mean it's not fun to watch, hehe.
As a flea market vendor, I was shocked at the attitude of some other vendors who never missed ROADSHOW so they could exploit items evn remotely similar to anything on the show. Naive me!
I stick to documented stuff. The 1992 Postcard Ballot issued by the Post Office to the public so they can vote on which version of the Elvis Presley stamp should be printed. Millions of them were free for the public in the lobby of Post Offices. Today one of them cards sell for 3 to 6 dollars in Mint/Near Mint condition. I scuffed lots of them and will let my son or grandchildren have them.