I was working in the stock room at Tannen's when they published that book. The leather bound books came in with the incorrect title. They were supposed to be, "The Best of Slydini...and More," but of course, the title said, "The Magic of Slydini...and More."
As I recall, Tony Spina was pretty upset. I was there when he found out about the mistake.
If I remember correctly, the 100 or "The Magic of Slydini...and More," were the leather bound limited edition of 100 numbered, signed copies.
This has always been a puzzle to me, as I have one of the original "The Magic of Slydini and More" volumes that eventually became "The Best of...." It took me some time before I found out what had happened and that the 2 volume set that I had was in fact going to become quite rare and hard to find. There are photos of Fulves, Tannen, Spina Manfredi and even the printer, David Mack. but it is not numbered and certainly not signed.