This is for a vintage ca 1970s-1980s pinback which reads "Boycott Nestle."  This was from the movement against Nestle that began in 1977 and ran through the earlier part of the 80s due to the way they marketed and packaged baby formula in underdeveloped countries where literacy was low and so mothers often used the products improperly, often leading to malnutrition (among other things).   From a neat collection of 60s era counter culture pins that I acquired! Measures 2 1/4" in diameter.  Front is clean.  Backside has a little tarnishing.