It is not a pin for restaurants; (I've noticed that the Charlie Snyder website refers (guesses) in error to this pin as that). Years ago, the author of the book on enameled badges, Jon R. Cone, told me that the name of this stickpin is: the National Association of Chartered Economics Accountants (CPA's),- the design in the center is a typewriter as seen from the side, & the things above it are thought to be pcs of paper ready for the typewriter. The typewriter's back is on the left.
