1” by Greenduck but with unusual reverse which does not name the company but rather has repeating union bugs plus text “The Mark (picture of floating duck) Of Quality.” The button is from 1940 and was issued by maker whose rectangular logo reads “Nash’s Quality.” Donald is shown running and eating a sandwich. Tiny Disney copyright initials beneath him. Only the fifth example we’ve seen and Exc. with gloss. Our last exceeded $250.00.