Twain Stamp Appraisals

Austrian Postage Stamp with St. Pölten Cancellation

Bighorn Sheep Stamp

Five Dollar Stamp with Taiwanese Flag

Brazil 100 Reis Correo 'Winged Mercury' Postage Stamp

US 2 Cent George Washington Postage Stamp, Green, Bureau Issue

1932 Los Angeles Olympics 3 Cents Postage Stamp

Wilbur Wright Aviation Stamp

U.S. Postage 25th Anniversary Panama Canal Stamp

1 Cent Benjamin Franklin Stamp

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

Canada 10 Cent Stamp

New Zealand Diamond Jubilee Stamp

Used 2 Cent John Greenleaf Whittier US Postage Stamp

1935 Michigan Centenary 3-Cent US Postage Stamp

Australian Stamp Featuring 1923 Car

Australia 20c Stamp

Bolivia 5 Cts II Congreso Eucaristico Nacional Airmail Postage Stamp

£2 London Stamp

Used James Fenimore Cooper 2-Cent United States Postage Stamp

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

John Tyler 10 Cents United States Postage Stamp

Polish Stamp 7 Zł

Australian 7 Cent Stamp

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

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

United States 4 Cents Defense Stamp

1932 Los Angeles Olympics 3 Cents US Postage Stamp

Austrian definitive stamp, 'Miner' series, 3 Groschen

Wright Brothers Commemorative Stamp

British Guiana 4c Stamp

5d Sir John Monash Stamp

Austria 5 Kronen Stamp

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

United States 1½ Cents Martha Washington Postage Stamp

United States 10 Cents Parcel Post Official Stamp, Type PR85

United States 3 Cents Postage Stamp, Robert Louis Stevenson

United States 1937 Army Issue Stamp (Lee/Jackson)

7d Elizabeth II Stamp

Switzerland 80 Cent Stamp

Austrian 2 Kronen Stamp (1916-1918)