• http://profiles.google.com/asm826 ASM 826

    That’s a Simplex SX610 derailleur, with a Peugeot label. Really a Simplex attempt to copy a Shimano derailleur of the same era. It would be the next thing I would replace if I was having shifting problems at all. Otherwise, I liked Peugeots and remember selling and working on them in the 70’s and 80’s.