This block of 20 1972 US Scott #1463, 8c Parent Teacher Association postage stamps are mint never hinged, unused, uncertified and ungraded. The stamps were issued 9/15/72 celebrating the existence of the PTA from 1897 to 1972. Please see pictures and contact me should you have any questions or concerns. Please also take a look at my other stamps for sale; I will work with you on prices for multiple items.