Danish physicist (1885–1962) who was awarded the 1922 Nobel Prize in Physics for his theory of atomic structure. Ink signature, “Niels Bohr, Copenhagen, 7–7–1960,” on a white double weight 5.75 x 3.5 custom-made collector's card (similar in look to an invitation card). In fine condition. Pre-certified PSA/DNA and RRAuction COA.
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