1974 10¢ Retarded Children Plate Block

United States #1549 10¢ Retarded Children Mint Single

United States #1550 10¢ Christmas - Angel Plate Block

United States #1527 10¢ Environment EXPO Plate Block

United States #1547 10¢ Energy Conservation Plate Block

United States #1548 10¢ Legend of Sleepy Hollow Plate Block

United States #1511 10¢ Zip Code Theme Plate Block

United States #1542 10¢ Fort Harrod Bicentennial Plate Block

United States #1551 10¢ Christmas - Currier & Ives Plate Block

United States #1538-41 10¢ Mineral Heritage - 4 Varieties, Attached Plate Block Varieties: #1538 - Petrified Wood #1539 - Tourmaline #1540 - Amethyst #1541 - Rhodochrosite *Plate number and...