For a while, mail-order catalog Hammacker and Schmeckler or whatever it is, was selling reconditioned Electroluxes. The machine shown in the catalog ad was a Model L but the fine print said, "actual machine may vary" meaning of course that you might get anything from an E, AE, F, R, S -or- L.
And yes, they were Metropolitan "dipped in a vat of blue paint" rebuilds. I've seen some where even the dusting brush clip, switch plate, and halo were painted. I'm surprised they didn't also paint the cord, handle and wheels!
The very earliest machines that Metro were doing (XXX and LX, even the occasional XII) were rebuilt with much better care and quality control, but even those were grossly inferior to Electrolux's own rebuilds which were finished with real, baked-on hammertone paint instead of spray paint.
The later Electrolux factory rebuilds from the 80s -- AE, F, L and G - were pretty crummy. They looked lovely when they were new, but the minute you start using them the textured spray-paint would start to crack, flake and peel. They were done in both brown and gray flocked-finish. (Or whatever you call it.) I have a beautiful gray Model G that was a gift from Fred Nelson and Charlie Watrous that's gorgeous, but I am afraid to so much as breathe on it lest I mar the repainted finish!
And another oddity -- during that same time, 1980s, or maybe a little earlier, Electrolux was also selling reconditioned Model XXXs! Stranger still, they were outfitted with very cheap, white plastic bojack attachments! I have an instruction folder for one of them. Very bizarre.