That's an interesting 1. What's it signed on? I'd lean towards no. It looks very carefully signed. If it was from any era it would be an early vintage autograph of his and a there's quite a bit I think looks atypical.
I'd go real on both of them. The one in question has a pretty weird 'Eric' imo though and the 'Clapton' loses it particularly at the end. The slow, carefulness of the sig generally as well is just very suspicious
That's good to hear. What's interesting is the color. The cover and the autograph have a brown tint. It might be the photo but the edge of the cover is pure white and there's black background to the right of it. That's why wondered if it could be a preprint. I don't know anything about Clapton's demo records, tho.