Each of these is about 7/8" to 1-1/8". There are just two duplicates in row one and one duplicate in row three. These were issued to promote National Tuberculosis Association. Several of the metal pins have the same design but are of different metallic finish. Earliest in the group are marked "1917-1919." First item in row two has Mint front but on reverse the catch for the pin is snapped off. Four of the celluloid buttons picture Santa Claus. At least 24 items in the group are different. A very advanced collection with the vast majority displaying Mint.