This is a lot of 12 plate blocks of stamps from the United States.
These stamps feature themes of: Petroleum Industry #1134, VII Olympic Winter Games #1146, Water Conservation #1150, Civil War Centennial: Fort Sumter #1178, The Mackinac Bridge #1109, Simon Bolivar #1110, Overland Mail #1120, Ernst Reuter #1136, George Washington Quote Credo #1139, Thomas Jefferson Quote Credo #1141, The American Woman #1152, and South Carolina #1407.
They come in pre-owned condition, Mint Never Hinged, in a double-sided display sheet.