I came across two crew-signed NASA-photos by Roosa, Shepard and Mitchell as well as Cernan Young Stafford (see pictures below). The signatures are definitely not printed. But I am not sure whether those are autopens or indeed real autographs. Any expert can tell me more?
Here is a tip... If you see an "Alan B. Shepard, Jr." signature on an Apollo era item, it is most frequently an Autopen. For the most part, he stopped signing his full name and adding "Jr." after the Mercury era. However, they continued to use that early signature style Autopen throughout his career.