1970 6¢ Natural History - 4 Varieties, Attached Plate Block

United States #1365-68 6¢ Beautification - 4 Varieties, Attached Plate Block*Plate number and position may vary from image shown.

United States #2220-23 22¢ Explorers - 4 Varieties, Attached Plate Block Varieties include: #2220 - Elisha Kent Kane #2221 - Adolphus W. Greely #2222 - Vilhjalmur Stefansson #2223 - Robert E. Perry,...

United States #3100-03 32¢ Songwriters - 4 Varieties, Attached Plate Block Varieties include: #3100 - Harold Arlen #3101 - Johnny Mercer #3102 - Dorothy Fields #3103 - Hoagy Carmichael *Plate...

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 -...

United States #3945-48 - 37¢ Constellations - 4 Varieties, Attached Plate Block*Plate number and position may vary from image shown.

United States #2750-53 29¢ Circus - 4 Varieties, Attached Plate Block of 6 Varieties include: #2750 - Clown #2751 - Ringmaster #2752 - Trapeze Artist #2753 - Elephant *Plate number and position may...

United States #1712-15 13¢ Butterflies - 4 Varieties, Attached Plate Block Varieties: #1712 - Swallowtail #1713 - Checkerspot #1714 - Dogface #1715 - Orange-Tip *Plate number and position may vary...

United States #4687-90 - 45¢ Bicycling - 4 Varieties, Attached Plate Block Includes one each: #4687 - Child on Bicycle with Training Wheels #4688 - Commuter on Bicycle with Panniers #4689 - Road...