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    • 1965-Feb-18 (Date of issue)

    Mexican postage stamp commemorating the 200th anniversary of the birth of Spanish-Mexican scientist, engineer, and naturalist Andrés Manuel del Río (1764-1849) best known for his discovery of compounds of vanadium in…

    • 1963-Nov-21

    Stamps depict Niels Bohr, the equation for the Bohr frequency condition (an equation relating to light frequency and electrons), and a diagram of the Bohr model of a hydrogen atom.

    • circa 1954

    Depicts a chemist with test tube and flask, as well as the chemical structure of a carboxyl group.

    • 1922 – 1936

    Nine small postage stamps in various denominations issued in commemoration of the 100th anniversary of the birth of Louis Pasteur in 1922. The large semipostal stamp was issued in 1936 and includes a surtax for the…

    • 1955-Mar-07

    On March 7, 1955, France issued a set of six stamps under the theme "Famous Inventors." One of these stamps featured Sainte-Claire Deville who created metallic aluminum in 1855. Stamp depicts modern uses of aluminum…

    • 1958

    Cachet and stamp depict Claude-Louis Berthollet. Cachet includes text describing Berthollet's contributions to water purification.

  1. Stamp from the series on the Leipzig Spring Trade Fair in 1950. Commemorates first porcelain on the trade fair in 1710.

    • 1976

    Depicts William Wrigley Jr., as well as a worker tapping a sapodilla tree, which was used to manufacture bubble gum. Includes the bicentennial logo of the American Revolution.

    • 1977

    While celebrating its centenary in 1977, the Royal Institute of Chemistry of Great Britain shared honors with English Nobel Prize winners in chemistry and physics. This stamp commemorates Derek Barton's receipt of the…

    • 1978

    Stamp on souvenir sheet depicting Max Planck, a rocket, and the planet Earth. Planck won the Nobel Prize in Physics in 1918 (the stamp incorrectly identifies his Nobel Prize as 1914). Max Planck is known as the father…