I have two Shelby bicycles from late 1950s/early 1960s. They were my father's and aunt's bikes from their childhood. The blue is Shelby Special Airflo and the red a Shelby Flyer. All of the parts on the bicycles are original and in fairly good condition for their age. Does anyone have any idea what they may be worth? They were headed to the junk yard for scrap metal before I rescued them from my grandparents house!