1960 4¢ "ECHO 1" Satelite Plate Block

United States #1173 4¢ "ECHO 1" Satelite Mint Single

United States #1151 4¢ SEATO Plate Block

United States #1162 4¢ Wheels of Freedom Plate Block

United States #1157 4¢ Mexican Independence Plate Block

United States #1155 4¢ Employ the Handicapped Plate Block

United States #1141 4¢ Credo - Jefferson Plate Block

United States #1159 4¢ Ignacy Paderewski Plate Block

United States #1139 4¢ Credo - Washington Plate Block

United States #1150 4¢ Water Conservation Plate Block