The whole top 10 list (concerning balloon tire bicycles), in my opinion, is in "one bike", the 1930's ELGIN ROBIN shaft drive. Sold years ago and I heard Jesse James restored it and I would have left it alone being so unique. There was a time when all three prototypes could have been purchased from one person who owned all three for one price. So you know, all three were slightly different but all were shaft drives. In retrospect, when something you know is rare and comes across your path, don't hesitate.
Can anyone of you speculate what one of these bikes would be worth today? And their worth if all three were together again?