#33541999 33c NATO
$0.20- $25.00 #10081952 3¢ NATO
$0.20- $36.50 #11271959 4¢ Nato
$0.20- $25.00 #27551993 29c Dean Acheson
$0.25- $69.50 #C1181988 45c Samuel P. Langley Airmail
$0.30- $85.00 #UC491974 18c Air Post Envelope, red & blue NATO emblem
$1.75- $3.20 #11511960 4c SEATO
$0.20- $20.00 #7321933 3c National Recovery Act
$0.15- $65.00 #9001940 2c Anti-Aircraft Gun
$0.20- $30.00 #9011940 3c Torch of Enlightenment
$0.20- $40.00 #9051942 3c Win the War
$0.20- $40.00 #1331-321967 5c Accomplishments in Space
$0.55- $57.00 #23621987 22c Steam Locomotives: Stourbridge Lion
$0.25- $5.00 #24681990-94 $1 Transportation Series: Seaplane, 1914
$2.25- $21.00 #2559d1991 29c World War II: Atlantic Charter
$2.25- $3.20 #12141961 8c John J. Pershing
$0.20- $50.00 #7961937 5c Virginia Dare
$0.40- $50.00 #12721965 5c Traffic Safety
$0.20- $18.50 #9481947 5c and 10c CIPEX souvenir sheet
$0.75- $4.50