I was never a big MIJ guy, but Pearl in the 70s is kicking my butt.
This set seems a little like some of the clear-out-the-parts-bin designs I've seen from Ludwig and Premier. And Sonor...hmmm, yeah common to companies that build the whole magilla in house.
Ludwig did lines like Standard, Rocker, Educator etc in part to use up existing stock of old parts. Premier did 6000/6500, Olympic etc. Sonor with Performer and others. All use parts from the last big push, or even two big pushes ago, combined into aggressively-priced short-run lines.
WARNING - baseless speculation to follow>>>
I imagine this kit to be one of those, probably around 1971-72. The rail is from 2 big pushes ago and the faceted discoball lugs were about to give way to the world-beater diamond lugs. Phenolic hoops were about to become steel. President was about to fade as a name too. Phenolic shells lived on through the 70s in concert toms and Vari-Pitch shells, but Pearl was offering a wide array of shells by then, with phenolic slowly being pushed down the line.
The question, WHERE were these drums sold? FWIW, I bought them from a guy in Montana. Could they have been for the Canadian market?
The lean of that badge font duplicates the posture of famed 70s cartoon figure Mr. Natural.