Description
Signed First Day Cover (25th Anniversary of the United Nations), 6,5 x 3,75 inch - with post stamps, (26. June 1970), signed by Luis W. Alvarez and William E. Simon in blue ballpoint, in very fine condition.
Further Information on the person
Profession:
(1911 & 1927 - 1988 & 2000) American experimental physicist, Nobel Prize in Physics (1968) & Secretary of Treasury of the U.S.
Year of Birth: 1911
Certificate of authenticity
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