Found this on a Twitter account I follow---Restaurant News. (It has some great stuff for analyzing Microeconomic concepts from an industry students are very familiar with, one way or the other).

It is a menu board for a restaurant (as Restaurant News says) in 1969 and just the kind of thing that makes for a short economics lesson!

The price of a cup of coffee (does not say how many ounces it is) is 5 cents---a nickel.