The product is a block of 4 unused U.S. Air Mail postage stamps with a denomination of 25 cents each. These blue stamps feature an aviation theme and were issued in the United States. They are of mint never hinged quality and have a face value of 100 cents. The certification status is uncertified, and the country/region of manufacture is also the United States. This collectible item is suitable for stamp enthusiasts and collectors. Tracking provided with shipping cost.