I don’t believe these are authentic. Alice has a fairly consistent full name sig and a fairly consistent “rushed” or abbreviated sig. this looks like someone trying to copy a blend of the two.
Also, and more interesting, is that the A and L in Alice look identical to the C and A in the Carl Palmer you also posted. That would indicate the same person signed both items - and it wasn’t Alice Cooper OR Carl Palmer.
Hello friends! I think the same way Alice and Carl Palmer are not real. I'm trying to warn a friend, but he thinks that whoever he sells has a reputation to watch over. Thank you for your opinion. It was very important for me to participate.