1975 10¢ Postal Service Bicentennial - 4 Varieties, Attached Plate Block

United States #1572-75 10¢ Postal Service Bicentennial Mint Se-tenant Block of 4

United States #1489-98 8¢ Postal Service Employees - 10 Varieties, Attached Plate Block of 20 Varieties: #1489 - Window Clerk #1490 - Mail Pickup #1491 - Conveyor Belt #1492 - Sacking...

United States #1565-68 10¢ Military Uniforms - 4 Varieties, Attached Plate Block of 12 Varieties: #1565 - Continental Army #1566 - Continental Navy #1567 - Continental Marines #1568 - American...

United States #1577-78 10¢ Banking & Commerce - 2 Varieties, Attached Plate Block Varieties: #1577 - Banking #1578 - Commerce *Plate number and position may vary from image shown.

United States #1569-70 10¢ Apollo-Soyuz Space Test Project - 2 Varieties, Attached Plate Block of 12 Varieties: #1569 - Docked #1570 - Docking *Plate number and position may vary from image shown.

United States #1543-46 10¢ Continental Congress Plate Block Varieties: #1543 - Carpenter's Hall #1544 - Quote–First Continental Congress #1545 - Quote–Declaration of Independence #1546 -...

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...

United States #1779-82 15¢ Architecture - 4 Varieties, Attached Plate Block Varieties: #1775 - Virginia Rotunda #1775 - Baltimore Cathedral #1775 - Boston State House #1775 - Philadelphia...

United States #2076-79 20¢ Orchids - 4 Varieties, Attached Plate Block Varieties include: #2076 - Wildpink (Arethusa bulbosa) #2077 - Yellow Lady's-Slipper (Cypripedium calceolus) #2078 -...