Nobel Prize, Edwin McMillan, Stockholm, Sweden, 1951

Nobel Prize, Edwin McMillan, Stockholm, Sweden, 1951

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Edwin McMillan shared the 1951 Nobel Prize in Chemistry with Glenn Seaborg. McMillan discovered element 93, or neptunium, in 1940 while working on the world's largest cyclotron at the Lawrence Livermore National Laboratory. Seaborg's discovery of element 94, or plutonium, was based on McMillan's discovery.
Currently not on view
Object Name
date on object
original issue
McMillan, Edwin M.
issuing authority
Nobel Foundation
obverse designer
Lindberg, Erik
reverse designer
Lindberg, Erik
obverse engraver
Lindberg, Erik
reverse engraver
Lindberg, Erik
place of issue
Sweden: Stockholm
Physical Description
struck (overall production method)
gold (overall metal)
circular (overall shape)
overall:.5 cm x 6.56 mm; 3/16 in x 1/4 in
ID Number
catalog number
accession number
Credit Line
McMillan, Elsie
Nobel Prize
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Work and Industry: National Numismatic Collection
Coins, Currency and Medals
Data Source
National Museum of American History
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My mother, my brothers and I chose to donate my father’s Nobel Prize medal to the Smithsonian after my father died in September 1991. We all felt that the metal would represent the amazing discoveries of the physicists and their team at UC Berkeley. Thank you for caring for the medal and letting people have virtual access to it. Regards,

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