I bought a set of about 20 of these cards at an antique store over twenty years ago. I think they're old fashioned calling cards, but I'm not sure. I've never done any research on them but I'd like to. I'd love to know what era they come from. They're about the size of business cards. The paper is a very heavy stock, and each one is printed (or hand painted?) in the most brilliant, saturated colors.