Semipostal stamp from Luxembourg to support the International Relief Fund for Intellectuals - Science History Institute Digital Collections

Depicts a scientist in a laboratory setting looking through a microscope.

Timeline of Philatelic Literature, 1830 - 1875

Stamp Issuing Entities Of The World

Stamps from Luxemburg - - The free online stampcatalogue with over 500.000 stamps listed.

Semipostal stamp from Luxembourg to support the International Relief Fund for Intellectuals - Science History Institute Digital Collections

Witco Stamp Collection - Science History Institute Digital Collections

Daniel F. Kelleher Auctions, LLC Sale - 713 Page 14

Luxembourg Semi-Postal Stamps for sale

Witco Stamp Collection - Science History Institute Digital Collections

Luxembourg Semi-Postal Stamps for sale

Sale 3058 - United States, British Commonwealth, and Worldwide Stamps, Covers, and Collections by H.R. Harmer - Issuu

Date: 1935 to 1939 - Science History Institute Digital Collections Search Results

Semi-Postal Stamps of the World

French semipostal stamp commemorating Louis Pasteur - Science History Institute Digital Collections

Luxembourg Semi-Postal Stamps for sale

Witco Stamp Collection - Science History Institute Digital Collections