@BuyersRemorsechu asks
got a signed card secondhand. Should I just list it as signed and assume people know who it is?
Jeff answers
I'd describe only what you can support: there's a signature, what it appears to read, and any documentation you received. Don't turn an uncertain signature into a verified artist autograph. Authentication of the card and authentication of the signature are separate questions worth keeping clear.
— Jeff, infinitepulls.com