We bought three sewing patterns with some amazing illustrations on them.
They were some of the most unique things we saw at the market. Only one vendor had them and we knew they would always remind of of our time in Paris.
We just assumed that they were cutouts of old packages or something, they were definitely priced like they were, but when we got home I translated the writing on the price tag and it says, "clothes patterns from 1970, original etchings."
And sure enough, once we got them out of their plastic sleeve, we noticed it's actual paint on paper. So we accidentally bought some original mid-century advertising art, and we couldn't be happier about it.