I had listed on E Bay a catalog from Sotheby's for coin op items. At the time there was a book called Coin Drop Here which I owned. This book was the bible for coin op collectors. It sold for 75 dollars at the time. In my description I say this catalog is better than Coin Drop Here and I received a letter from the author of said book. BTW the catalog is better and every one I sold went for over 200 dollars.

Barry