As some of you know, my name is Steve Zarelli and I am an astronaut , cosmonaut and aviation autograph authenticator for RR Auction, JSA, SGC as well as dealers and collectors worldwide. I have been studying Neil Armstrong autographs for over 15 years, and every week I examine multiple Neil Armstrong autographs for one or more of my clients.
My Neil Armstrong study shows multiple exemplars over time and demonstrates how his signature evolved from pre-NASA through when he stopped signing in the 90s. I also have proxy/secretarial examples as well as an overview of some forgery styles from over the years... some quite recent from active forgers.
Stay tuned because I plan on adding additional studies including Gus Grissom, Ed White and maybe more.
Please check out the study when you get a chance and hopefully you find it informative.
Zarelli Space Authentication