Czechoslovakian 40 Haler Postage Due Stamp Appraisals

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

Manuel Belgrano 1/2 Centavo Postage Stamp

U.S. Postage 25th Anniversary Panama Canal Stamp

Cayman Islands Half Penny Postage & Revenue Stamp (Cat Boat)

Used United States 6 Cents John Quincy Adams Postage Stamp

Collection of Deutsche Post (German Post) Postage Stamps

Canal Zone 1/2 Cent George Washington Postage Stamp

1935 Michigan Centenary 3-Cent US Postage Stamp

Collection of German 'President Hindenburg' Definitive Postage Stamps (1933 issue)

U.S. 3-Cent 'Liberty' Postage Stamps (Block of Two)

Austrian 5 Krone Postage Stamp (1916-1918)

German Empire 'Germania' 24 Pfennig Postage Stamp

1 Cent Green George Washington Stamp

Australia 3c Jellyfish Stamp

Hungarian 1.20Ft Airmail Postage Stamp with Building Motif

Canadian Red Fox Postage Stamp

Collection of Early-to-Mid 20th Century Revenue and Definitive Postage Stamps

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

Newfoundland Postage Stamp Collection

Dr. Sun Yat-sen (Martyrs)

Trans-Pacific Airmail Stamp 1935

Indian Fish Postage Stamp

Two-Cent Red Stamp

Republic of China Postage Stamp featuring Sun Yat-sen

Belgian Congo 'River Landscape' Postage Stamp, 10 Centimes

3-Cent George Washington Bicentennial Postage Stamp

Collection of Austrian Postage Stamps (Second Republic Era)

British 20p Queen Elizabeth II Postage Stamps

90 Fils Stamp of United Arab Emirates

United States 12 Cents Zachary Taylor Postage Stamp

Australia 1940 1d Postage Stamp, King George VI (Postmarked)

Italian Postage Stamp

U.S. Special Delivery Postage Stamp, 10 Cents

Republic of China Junk Ship Postage Stamp

Costa Rica 10 Centimos Isla del Coco Postage Stamp

Used Australian Postage Stamp (Kangaroo and Map Series)

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

Tadeusz Kościuszko U.S. Postage Stamp, 5 Cents

Ceylon Queen Victoria 6 Pence Postage & Revenue Stamp (Purple)

United States 4 Cents Defense Stamp