Interesting. My dad bought a PX-10 a year or two after I did (I think his was a 1973 model, maybe '74) and it did not come with a pushrod FD like mine, it had a parallelogram type (but it was plastic and metal, unlike the LJ which was all metal). I was told at the time by several folks that this new derailleur was a Criterium... if that's not the case, what was it? Photo here:
http://crossgeared.com/
Bob Hovey
Columbus, GA USA
http://bhovey.com/
>> The only difference between the "Criterium" and "Prestige" front
derailleur is the front clamp plate and the button cover. All of the
other parts are identical. In the 1974 French Simplex catalog the
"Criterium" is described and translated loosely "....same
as......presentation luxe (deluxe)" meaning that it had a chromed front
mounting plate and an alloy cover button vs the "Prestige" which had a
nickel (?) plated mounting plate and a red plastic cover button with the
Simplex "S" logo. Attached is a link to a photo for those appreciate
visuals.
So, if you have a cracked Delrin body on your "Criterium" you can buy a
"Prestige" (usually much less expensive) and swap your clamp plate and
button.
Jay "one who enjoys visuals" Dubiel
Halifax, VA USA