In the late 1970s or early-80s I bought, through an auction house in New York, one of John Lennon’s bank cards. It was from Barkleys bank, and it basically said that Lennon was free to use it as long as it was under $200, but more than that must be agreed upon by his two lawyers. I paid $120 for it.
Seriously. $200.
The little card was signed by Lennon and these two lawyers.
I held onto this card for a few years, and then I thought I should sell it, so I put an ad in the Ottawa Citizen, but no one called.