I know that Fiorucci was a popular brand name in the mid 70s, with cigarette skinny jeans and such, very Disco and European inspired. I wore a pair of their jeans to Regine's in 1974, but I was skinny then too! I doubt they are a one off, they might have been a promotional item. I don't know how long the company was in business, but these bags have a sort of late 70's to very early 80s look to them.
I like them!