1981 18¢ Flowers - 4 Varieties, Attached Plate Block

United States #1928-31 18¢ American Architecture - 4 Varieties, Attached Plate Block Varieties include: #1928 - New York University Library #1929 - Biltmore House #1930 - Palace of the Arts #1931 -...

United States #1912-19 18¢ Space Achievements - 8 Varieties, Attached Plate Block Varieties include: #1912 - Exploring the Moon #1913 - Releasing Boosters #1914 - Cooling Electric Systems #1915...

United States #1942-45 20¢ Desert Plants - 4 Varieties, Attached Plate Block Varieties include: #1942 - Barrel Cactus #1943 - Agave #1944 - Beavertail Cactus #1945 - Saguaro *Plate number and...

United States #1937-38 18¢ Yorktown/Virginia Capes - 2 Varieties, Attached Plate Block Varieties include: #1937 - Yorktown #1938 - Virginia Capes *Plate number and position may vary from image...

United States #2048-51 13¢ Olympics - 4 Varieties, Attached Plate Block Varieties include: #2048 - Discus #2049 - High Jump #2050 - Archery #2051 - Boxing *Plate number and position may vary from...

United States #2032-35 20¢ Ballooning- 4 Varieties, Attached Plate Block Varieties include: #2032 - Intrepid #2033 - Red, white, & blue balloon #2034 - Yellow, gold, & green balloon #2035 -...

United States #2082-85 20¢ Olympics - 4 Varieties, Attached Plate Block Varieties include: #2082 - Men's Diving #2083 - Long Jump #2084 - Wrestling #2085 - Women's Kayaking *Plate number and...

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