I didn't but it appears your trying nail down a year based on the RD and that's a big no-no. Simplex 537, 637, Prestige, Criterium...whatever. It doesnt make a difference. And i know all about that distributor borochure, its sitting right next to me and the image in post #58 is a distributor broochure as well.

Of note in the post 58 image is the description:

Peugeot PX10 Type E, angles 72 degrees.