10 Cent Thomas Jefferson Stamp Appraisals

29 Cent USA Tulip Postage Stamp

U.S. Postage 3 Cent 'Gardening Horticulture' Stamp (1958)

Hong Kong 90 Cent Stamp

1940 Coronado Expedition 3-Cent Commemorative Stamp

3-Cent George Washington Bicentennial Postage Stamp

1 Cent 'For Defense' US Postage Stamp, Scott #898

1862 9-Cent Revenue Stamp

4-cent Abraham Lincoln Postage Stamp

1 Cent Benjamin Franklin Stamp

1937 Northwest Territory Sesquicentennial 3-Cent Stamp

1 Cent Green George Washington Stamp

Costa Rica 10 Centimos Isla del Coco Postage Stamp

Austrian Franz Joseph I. 10 Heller Postage Stamp (1908 issue)

Curacao 15 Cent Luftpost Airmail Stamp

U.S. Postage 'To The Fine Arts' 5-cent Stamp (1962)

Kenya, Uganda, Tanganyika 1 Cent Stamp featuring King George VI

Elias Howe 5-cent US Postage Stamp

Canadian 3-cent Postage Stamp

U.S. Postage 3 Cent Horticulture Stamp

Canada 5-cent Wild Flower Stamp

Pan-American Union 50th Anniversary 3-Cent US Postage Stamp

4-Cent Abraham Lincoln Postage Stamp

Andrew Jackson 1-cent US Postage Stamp

Inverted 1 Cent United States Postage Due Stamp

Canadian 4 Cent Postage Stamp

1959 4-Cent United States Postage Flag Stamp

United States 3 Cents Postage Stamp (George Washington)

United States 3 Cents Postage Stamp (George Washington)

Queen Wilhelmina of the Netherlands Indies 20 Cent Stamp

United States John James Audubon 1-cent Postage Stamp

United States 3-Cent 150th Anniversary of the Adoption of the Constitution Stamp

25 Cent Abraham Lincoln Air Mail Stamp

British Guiana 1 Cent George VI 'Ploughing a Rice Field' Stamp

U.S. Postage Stamp Centenary (1847-1947) 3-Cent Stamp

1940 Coronado Cuarto Centennial 3-Cent US Postage Stamp

21 cent United States Air Mail Stamp

U.S. Postage Stamp: 'To the Fine Arts' 5-Cent

5 Cent Canada Stamp (Bucket Show)

1-cent Gilbert Charles Stuart U.S. Postage Stamp

United States 2 Cents Postage Stamp (George Washington Silhouette)