We offer this set of six (6) Wildlife Confederation Block of Stamps. The stamps were originally issued on June 12, 1971, in Avery Island, Louisiana. They honor the following threatened and endangered species: The polar bear, the California condor (one of the rarest birds in the world), the alligator, and trout. Other than being precanceled, these have not been used and the glue is good. This block of stamps is precanceled with the following cities: Millen GA, Wilsonville OR, Warrenvill SC, Saint Cloud FL, Ridgeway SC, and Swan Valley ID. Please see photos for more details.