What are important criteria for being as certain as you can be, when purchasing an autograph?
I just purchased this Game Of Thrones signed photo. I had seen the same image on Hollywood Memorabilia last year. I received the photo, which was printed on Fuji paper. It made me a bit nervous that it was a print. I looked at it under the bright light, so see if the marker looked different than the photo....and it was very difficult to tell. I didn't look and go, "oh, yes that's marker"...even if it was a fake... it almost looks like a print off a printer. I am not sure if I am over thinking it or not. It did come with an authenticity card, which I checked prior to the purchase and it verified that number was her signature.
Here's the link to the purchase;
https://www.ebay.co.uk/itm/152228157034