Just came across this set of autographs. The signatures appear to be fading in color. Can't say I like this set. George's signature looks a bit choppy and not sure about the other 3.
From the image, these don't look like naturally signed autographs to me, but it could possibly be the image. I wouldn't consider it without large sharp images.
Hi Steve, I noticed that as well in the George and John. I also seemed to remember something about preprints or some such on another similar cards shown here some time ago with a Ringo in blue - but I can recall no more.