This US airmail plate block features the C11 denomination and includes 2 plate numbers along with a blue top. The stamp is in mint never hinged (MNH) quality and showcases a colorful aviation theme. This item is from the United States, and while it is not certified, it is an excellent addition to any stamp collection. The stamp is graded as G (Good) and has a Scott Catalog Value (SCV) of $42.50. Lot #2404-16.