This USA Sc #1151 stamp features the emblem of the Southeast Asia Treaty Organization (SEATO) and was issued in 1960. The stamp has never been hinged and is in excellent condition. It has a denomination of 4 cents and is colored in blue. This stamp is a plate block/multiple and is ungraded. The stamp was issued in the United States and has not been certified. It is a great addition to any stamp collection and a wonderful piece of history.