Cameo refers to type design in which the characters are reversed out of a dark background. In figural cameos, the background typically depicts the product or service being advertised. Judging by the dates on some of these vintage mail items, this form of branding reached it’s height in the 1800s, although I have seen quite a few contemporary designs referencing this unique artform.
I originally came across these images on Miss Moss and traced some more info on The Trade Card Place.
wow! Like the vintage look. Very cool to see how things have changed.