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 fourth example we’ve seen and without question the best as this one is truly N. Mint and displays Mint. See following related item.