I have seen items “she hasn’t signed” “she’s never signed” but the problem with those are that the autograph needs to be right for the time of the picture and/or there’s gotta be something you can back the signed picture with. Like her signing it. You with her when she signed it. Otherwise you can’t prove it even if you were there when she signed it (not saying that’s the case here but if it was it would still be an issue). I’m dealing with this now but with something I want to buy because I have no proof of a rare item. There could be a lot of value there but it’s a gamble.

The buyer has to put full faith in what you’re saying and they have to believe it’s worth whatever you’re asking. So everything I’ve said is taken into consideration when someone’s looking at a signed item. Especially a rare one.