1969 6¢ Botanical Congress (4 Varieties) Mint Sheet

United States #1543-46 10¢ Continental Congress Mint Sheet of 50 Varieties include: #1543 - Carpenter's Hall #1544 - Quote–First Continental Congress #1545 - Quote–Declaration of Independence #1546...

United States #1387-90 6¢ Natural History - 4 Varieties, Attached Mint Sheet of 32 *Plate number and position may vary from image shown.

United States #2055-58 20¢ Inventors (4 Varieties, Attached) Mint Sheet of 50 Varieties include: #2055 - Charles Steinmetz #2056 - Edwin Armstrong #2057 - Nikola Tesla #2058 - Philo T. Farnsworth ...

United States #2372-75 22¢ Cats (4 Varieties, Attached) Mint Sheet of 40 Varieties include: #2372 - Siamese, Exotic Shorthair (x10) #2373 - Abyssinian, Himalayan (x10) #2374 - Maine Coon, Burmese...

United States #2076-79 20¢ Orchids (4 Varieties, Attached) Mint Sheet of 48 Varieties include: #2076 - Wildpink (Arethusa bulbosa) #2077 - Yellow Lady's-Slipper (Cypripedium calceolus) #2078 -...