Scientific Stamp Appraisals

German Stamp - Radio Telescope

Antique Wheatstone Bridge / Resistance Box

Texas Instruments TI-36X Pro Scientific Calculator

Geological Specimen

Meteoritic Rock

Botanical Illustration

Unidentified Rock Specimen

Possible Meteorite

Possible Meteorite

Unidentified Mineral Specimen (Possibly Quartz)

Lunar Meteorite

9d Revenue Stamp

Commemorative Stamp

Cathedral of Puget Stamp

£2 British Stamp

Frank Lloyd Wright Postage Stamp

1953 Japanese Stamp

Stamp - Weathercock

Stamp

Portuguese Stamp

Historical Stamp

Portuguese Stamp

Chinese Commemorative Stamp

20p Queen Elizabeth II Stamp

50 Paisa Postage Stamp

Christmas Stamp, 15c

Queen Elizabeth II 2d Postage Stamp

U.S. Postal Stamp - A Public That Reads

Queen Elizabeth II Commemorative Stamp

4 Cent Purple Abraham Lincoln Stamp

24c Commonwealth Heads of Government Meeting Stamp

3 Cent George Washington Stamp (1861)

America's Light Stamp

5000 Lira Stamp

5 Dirhams Stamp

4 Dollar Purple Stamp

Taiwanese Postage Stamp

British 24p Stamp

1 Cent George Washington Stamp

10 Cent Stamp: People's Right to Petition for Redress