Originally Posted by verktyg

Undocumented variants!

The closest I can think of off the top of my head were "some" of the late 60's early 70's Criterium RDs had a date code stamped into the inner pulley cage.




All of the published information I've found for the Simplex Criterium derailleurs list the capacity the same as the Prestige. BITD we found a number of Gitane TdFs had Criterium RDs with shorter cages and would only handle up to a 26T large FW cog!