Looks about right to me. Probably signed about twenty years ago seeing how it’s a slightly more full signature whereas ones signed today tail off a lot sooner in his last name making a shorter quicker signature.
Not sure about your Spielberg autograph, Karl, but here is another one I bought years ago from an eBay-seller. The signature is part of a book, the German first edition of "Close Encounters of the third kind". The book itself is from 1978.Would be happy about your opinons concerning this autograph!