I have saved this comic since 1991 as it was part of the first original owner GA collection we ever bought for the store. Denny Cobb was in his early 80s when he walked into a friend's shop with Batman 1-50, Detective 75 - 140, and some various World's Finest and Star Spangled comics. All of them had his name on the cover. My friend gave me a shout and the two of us negotiated a deal with Mr. Cobb to purchase the collection and split it. At one point my friend said to Denny "We would have paid you a lot more money if you hadn't written your name all over these." Denny replied, "If I didn't write my name on them my friends would have stolen them and you wouldn't be able to buy them at all!"
Great story, Pat! Like you (and many regulars on this thread, I suspect) I'm old school and do not like writing on books. But more and more, at least with GA, having the historical provenance of an OA's owner on the book bothers me less than the idea of having a book autographed. No offense to any sig series fans, but the point is I am warming to OA provenance.