This 1983 USPS Commemorative Mint Set is a must-have for any stamp collector or history buff. The set includes 20 cent stamps featuring historical events and figures. Each stamp is in mint never hinged condition and comes in a sealed envelope. Also included is a a book, A Year of Commemorative Stamps, beautifully illustrated with color photos published by the US Postal service.  The set is ungraded and uncertified, but its quality is undeniable. The colorful stamps originate from the United States and were issued between 1981-1990. The cancellation type is none. This item is brand new and has not been modified in any way. It is a great addition to any collection and serves as a reminder of some of the most important moments in American history.  NOS- New  Old Stock.  Excellent, new condition.  Fast, free shipping.