I have some Mavic "Montherly" (I think I have that right) rims that date from 1972-74 that I got in 1980 as the rims on some used wheels. They had red labels on them, with the Mavic logo in gold. They were faded even then, and I think now that, after many miles, all that's left is the foil backing. Still round and true, and they polish up nice.
Bob Oast
Asheville, NC