I recently purchased my first folding bike, as seen in my recent post in this forum. I cannot wait to take it out. In my search for a folding bike, I was offered two "vintage" Dahon's from a different Seller. These are purportedly collecting dust and un-used in years. Space is tight for me, but I hate to pass them up leaving them to an unknown fate. Does anyone know when these would date to? One is described by the Seller as "probably only good for parts". Are these models fairly common? thanks.