Just a question. I remember seeing an old Urago, I believe, on Ebay that had one of those fancy art deco looking chain guards like the Rigid presently on Ebay. I guess at some point, these were used on road or touring bikes. Were these single chain rings or was there some way to mount these on derailleur bikes. The photo of the Urago wasn't very good, but it appeared to have two Campy shift levers. The chain guard appeared to be attached to the seat tube and on the right chain stay. Thanks in advance.