I mailed a letter to Craig T. Nelson (Mr. Incredible) on July 27th and received an autograph that seems to be authentic (even though it's not made out to anyone. It did smudge a bit at the end. I received it August 11, 2021 (yesterday)
I used the address in the database
C/O Cynthia Snyder Public Relations
5739 Colfax Ave.
North Hollywood, CA 91601