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On May 4, 2005, the USPS issued a set of four stamps honoring four American Scientists - John von Neumann, Josiah Willard Gibbs, Barbara McClintock, and Richard Feynman. Shown here is a genuine First Day Cover, an envelope with the stamp for Josiah Willard Gibbs cancelled from the city of issue (New Haven, CT - due to the fact that Gibbs was the 1st person in the U.S. to receive a PHD in Engineering - his degree was from Yale) on the first day of issue captioned above. Note the special 'atom' postmark created to cancel this set of stamps on their 'birthday', featuring the name of each scientist.
The full-color cachet (artwork on the envelope) depicts a portrait of Gibbs, the mathematical physicist who laid the foundation for chemical thermodynamics,as well as the inventor of vector analysis. The cachet is printed on silk, the luster lending an-almost three-dimensional quality to the portrait. Collectible, historic, this cover honors one of the twentieth century's earliest theoretical physicists and theoretical chemists....Josiah Willard Gibbs.
Double matted in blue and white, it's sized to fit a standard 8x10 frame. ***Certificate of Authenticity Included***
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