Inverted Center Stamp Appraisals

4 Cents William Howard Taft US Postage Stamp

U.S. Postage John Ericsson Memorial 5 Cents Stamp

United States 3 Cents Postage Stamp Design

30 Cents Theodore Roosevelt US Postage Stamp (1922-1926 Series)

Ralph Waldo Emerson 3 Cents United States Postage Stamp

Queen Wilhelmina of the Netherlands Indies 20 Cent Stamp

1940 Coronado Expedition 3-Cent Commemorative Stamp

5 Cent Frances E. Willard US Postage Stamp

James Russell Lowell 3 Cents US Postage Stamp

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

Byrd Antarctic Expedition II 3 Cents U.S. Postage Stamp

25 Cent Abraham Lincoln Air Mail Stamp

1902-1903 Louisiana Purchase Exposition Stamp (20 cents)

Louisa May Alcott 5 Cents United States Postage Stamp

US Postage Stamp - Sherman, Grant, Sheridan (3 Cents)

United States 3-Cent Admiral Farragut and Admiral Porter Postage Stamp

1959 4-Cent United States Postage Flag Stamp

Canada 6 Cents Postage Stamp - Fort Garry Airmail

1934 Mother's Day Three Cents U.S. Postage Stamp (Scott #737)

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

Tadeusz Kościuszko U.S. Postage Stamp, 5 Cents

Liberia 10 Cents Registered Stamp, Harper Issue

James Fenimore Cooper 2 Cents US Postage Stamp

United States 12 Cents Zachary Taylor Postage Stamp

Abraham Lincoln 3 Cents US Postage Stamp

United States 1 Cent Commemorative Stamp (Washington - Greene, Mount Vernon)

Liberia 2 Cents Postage Stamp (Architectural Motif)

United States 2 Cents Postage Due Stamps (Block of Two)

James Buchanan 15 Cents United States Postage Stamp

1932 Los Angeles Olympics 3 Cents Postage Stamp

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

Canada 20 Cents Postage Stamp, Fort Chambly Issue

2-Cent United States Postage Stamp (Scott #210)

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

1932 Los Angeles Olympics 3 Cents US Postage Stamp

4 Cent Abraham Lincoln US Postage Stamps (Block of Two)

Kenya, Uganda, Tanganyika 5 Cents Stamp featuring King George VI and a Dhow on Lake Victoria

United States 2 Cent George Washington 'Carmine Type I' Postage Stamp (1890-1893)

Claire Chennault 'Flying Tigers, 1940s' USA 40-cent Postage Stamps

Elias Howe 5-cent US Postage Stamp