Good points by everyone, for the balls being ok, and not. I just did a Google for Babe Ruth signed balls and looked at about a dozen photos. Most, if not all, had the "standing small b", which the ones in the article do, which kinda blows my theory next to the paper exemplars.
Also, I have never closed on a house..hahaha. but that point is well taken, plus, signing a ball is very difficult too. Ive done it once in an amateur baseball league I work for, for a kid w Downs Syndrome, and my signature, back when I had more than a sloppy scribble

did look very different too, than on a check.
Can't wait for the next article tho. I love this stuff.