1.25" with small oxidation on back collet and typical surface oxidation on the metal back. Pictured is what appears to be a poppy representing the California state flower. Button was issued shortly after the events of May 16 and days that followed when police attempted to reclaim an area of land that had been taken over and transformed into a "People's Park." This became one of the landmark confrontations of the 1960s. Also see related poster #152. Cello is NM and displays Mint. Marshall Levin Collection. Comes with Hake's COA.