Wiktionary
cigarette card
n. A small card given free with each pack of cigarettes. Each card had a picture on the front and a text about the picture on the back. They were issued as sets about selected themes. They are collector's items now.
Wikipedia
Cigarette card
Cigarette cards are trade cards issued by tobacco manufacturers to stiffen cigarette packaging and advertise cigarette brands.
Usage examples of "cigarette card".
You'd have required a pile-driver in top condition to get a cigarette card between us.