Up for sale is a set of four plate blocks featuring the 1950 National Capital Sesquicentennial design. These blocks contain four stamps each with a denomination of 3 cents, and were minted in the United States. The quality of the stamps is Mint Never Hinged/MNH,   The stamps feature multi-color architecture designs and are a great addition to any stamp collection. This set is perfect for collectors of United States stamps, and is categorized under Plate Blocks/Multiples.