My old 1973 Peugeot U08 10 speed front derailleur is broken. (I believe it's operated with a piston-rod). It is half plastic (Derlin?) and that part has split. I assume it's not repairable.
I seek ideas on what to replace it with. Should I look for the same stye used, NOS, or should I replace it with something newer by another company? Is there a specific type of derailleur I must use, or can I use any which will fit a 28.5mm tube?