I'm sure the Collins collection is more real than that in my hometown museum.
My college roommate was the stepson of a fellow who had written some very well known books about a particular old west legend. He was
Considered something of an expert and hired to consult on movies and things like that. In his old age he bragged that he could go down to an antique store, but an old razor for $1 and write a certificate that it had belonged to the legend and it would sell for hundreds.
Caveat emptor.