There are a few reputable authentication services that provide a quick opinion. I used PSA in the past but all I got back from them was a single sentence on an item that said "Likely Not Genuine" with not even a sentence or two of why that opinion was offered... annoying but that is not my main question here.

My main question is (if in fact I have found a genuine item that is being listed at a bargain) and I send a link to that item to someone to "quick authenticate" am I also giving…

Steve Zarelli Space Authentication is pleased to present an online signature study on NASA astronaut, Virgil "Gus" Grissom. The full study can be found on my website by clicking here.

I have included a number of verified signature exemplars that span the short period Gus Grissom was signing autographs, as well as Autopens, secretarials, pre-prints and…

At Steve Zarelli Space Authentication, I review thousands of autographed astronaut photos every year. Also, as a collector for over 15 years, I have seen many, many more.

So what is the most valuable and desirable single signed astronaut photo? Most people would probably assume it is a photo signed by Neil Armstrong. Armstrong unpersonalized white space suit portrait photos with a strong signature can fetch $5,000+. In a RR Auction Space Auction last fall, this…