Wanted: WANTED: Front derailleur - Old School

What I really need is one of these, it is a Suntor often branded Raleigh, it works in reverse, I.e it sprung to be in the big ring as default, it was std fare on 70's 80's Raleigh bikes, some one must have one lying about.

See link for image

www.35mhz.co.uk/suntor.JPG