1 Cent Postage Due Appraisals

Used 5 (Kreuzer?) Stamp, Orange with Central Cross on Shield

Wright Brothers Airmail Stamp

Soviet-Era Automobile Postage Stamp Collection in Album

Belgique Congo (Congo Belge) Stamp featuring an adult and child

Polish Stamp 7 Zł

Canadian Stamp - 1955

British 4d Lilac Stamp

Transpacific Airmail Stamp 1935

Iranian 5 Dinars Stamp

25 Centimos Stamp from Spain

5p Queen Elizabeth II Stamp

Robert Millikan Commemorative Stamp

Iceland 10 Aur Philatelic Stamp featuring Skógafoss Waterfall

Eugene O'Neill Commemorative Stamp

U.S. Post Office Department Registry Bill, Form No. 1550

Thomas Paine Stamp

3p St. Patrick's Day Stamp

New Zealand Christmas Stamp

Orville and Wilbur Wright Stamp

New Zealand Four Dollar Stamp

Wilbur Wright Aviation Stamp

Republic of Korea Postal Stamp featuring a Celadon Vase

Polish 10 Zloty Postal Stamp featuring Józef Piłsudski

Australian Stamp featuring a Native Animal

Oliver Wendell Holmes Stamp

Azerbaijan Democratic Republic Stamp, 20 Rubles

British 8p Queen Elizabeth II Stamp

Post-war German Stamps Collection on Album Page

24c Commonwealth Heads of Government Meeting Stamp

Australia 4d Koala Stamp

22p Queen Elizabeth II Stamps

New Zealand Stamp (5c Carnelian)

Postage Stamp: George VI and Queen Elizabeth (Morocco Agencies)

South Korean Stamp Featuring Traditional Pot

New Zealand 4 Dollar Stamp Duty

Chinese stamp commemorating mountaineering and the 10th anniversary of the People's Republic of China

10 Paise Electric Locomotive Stamp

Stamp featuring the Flag of the Republic of China

5d Blue Queen Elizabeth II Stamp

Collection of German Democratic Republic (DDR) Postmarks and Stamps