Russian Empire 50 Kopecks Postage Stamp With Inverted Center Appraisals

10 Cent Jefferson Memorial Stamp

10 Cent Jefferson Memorial Stamp

Kenya, Uganda, and Tanganyika 10 Cents Stamp

Charter Oak Tercentenary 3-cent Stamp

Chinese Nationalist Airmail Stamp (15 Cents)

Used Canada 10 Cents Stamp - Mounted Policeman

Robert Millikan Commemorative Stamp

5 Cent Canada Stamp (Bucket Show)

1929 2-cent Battle of Fallen Timbers Commemorative Stamp

Eisenhower 6-Cent Stamp

Mauritania Stamp, Camel with Rider, 3c

4 Cent Purple Abraham Lincoln Stamp

3 Cent George Washington Stamp (1861)

Used U.S. Air Mail 6 Cent Stamp with Beacon Design

1934 Wisconsin Tercentenary 3 Cent Stamp - Nicolet's Landing

George Washington Bicentennial 3 Cent Stamp

5 Cent George Washington Stamp

1 Cent Benjamin Franklin Stamp

1937 Northwest Territory Sesquicentennial 3-Cent Stamp

1940 Coronado Expedition 3-Cent Commemorative Stamp

Hong Kong 70c Stamp

U.S. 2-Cent Civil War Era Stamp

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

Queen Wilhelmina of the Netherlands Indies 20 Cent Stamp

Hong Kong Two Cents Revenue Stamp, King George V design (possibly postage fiscal)

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

United States Parcel Post Stamp, 2 Cent (Type 1)

German Reich 25 Pfennig Philatelic Exhibition Commemorative Stamp

United States 10 Cents Special Delivery Stamp, Type of 1922-1925

1926 U.S. Postal Cover with 1-Cent Franklin Stamp

Netherlands Indies 3 Cent Stamp, Water Buffalo and Paddy Field

United States 10 Cents Parcel Post Official Stamp, Type PR85

Used U.S. Parcel Post 10 Cents Stamp with "ANN" Overprint

South African 1 Cent Stamp

United States 4-cent Civil War Generals Commemorative Stamp

George C. Marshall Commemorative Stamp

Hong Kong 90 Cent Stamp

United States 1934 National Parks Issue, 3-cent Grand Canyon

Curacao 15 Cent Luftpost Airmail Stamp

Liberia 10 Cents Registered Stamp, Harper Issue