Smallest is 1.25" and largest is 4". All but two in the top row include a window for a name card with some present and some not. First is 2.5" litho button with text "Eastern District Society Of A.A.H. P.E.R. May 2-6 1939/World's Fair Convention/New York City." We've had this only once before and this example is NM with tiny paint dot off far right. Second is 1.25" button reading "Welcome Comrades/Chicago 1933/World's Exposition." Curl has name of maker Geraghty. Next is a "Welcome" button for the "Great Lakes Exposition" held in the late 1930s. Additional buttons relate to Atlantic City pageant, 1941, Boy Scouts, post office, various civic associations and colleges. Vast majority are Exc. and display Mint. Also see similar buttons as lots #440, 535, 575.