NATIONAL COMMISSION ON SPACE SIGNED CERTIFICATE NEIL ARMSTRONG CHUCK YEAGER GRAD COLLECTIBLE MEMORABILIA

Every item is guaranteed authentic. Each purchase includes an Autographia Certificate of Authenticity and a tamper-proof dual hologram sticker - one on the item, one on the COA card - with matching serial numbers. Backed by our lifetime guarantee.

Our authentication process

GRAD Authentication is an independent third-party authentication service for autographed memorabilia. Its certificates of authenticity are backed by expert examination of the signature against exemplars, and are accepted by dealers and collectors.

Your GRAD COA includes a unique certificate number you can verify directly on their website.