60s/70s 3-Piece Plastic Curtain Set

What in the world 🌎?! 60s/70s plastic curtain set! 3-piece (2 panels, 1 valence), 72" long X 72" wide over all. New old stock in package. One tear in plastic packaging but curtains themselves are unharmed.
#vintagecurtains #drapery #mcmhome #mcmdecor #deadstox #deadstock #newoldstock #1960s #1970s