I have a small stash of NOS Huret Duopar Eco Steel Rear Derailleurs for sale.The Duopar has 2 parallelograms. They were the economical derailleur on the touring scene in the early 80s. They were also fitted on mountain bikes of the era. Complete w/ the little plastic bolt cover, see foto: http://tinyurl.com/7vrw8
Price is 49.00 shipped in the USA. International orders are 10.00 extra. Sorry, I only have steel derailleurs, no TI.
Paypal, checks, money orders accepted. Paypal: firstname.lastname@example.org
83 Arlington Ave. W. Apt. #301
St. Paul, MN 55117 USA