Each of these is 1-3/8" litho circa 1950. This is the most extensive collection of sponsors we have seen. All have identical designs but different names as follows: Blue Ribbon Dairy, Diarylea, Dairymens, Hawthorne-Mellody, Ideal Dairy Farms, Med-O-Pure Dairy, Polk Dairy, Sorge Dairy. Last button has a couple of hairlines beneath the paint but no actual paint loss. The others have the most trivial pinpoints of wear and all are at least Exc. if not NM or Mint.