Danish physicist awarded the Nobel prize for Physics in 1922 for his theory of atomic structure. Fountain pen signature, “G.L. Carlsbey, 3/6/34” in the upper right corner, and “Niels Bohr” at the card’s center of a 5.5 x 3.5 postcard In very good condition, with a signature and newspaper photo of an unidentified man have been affixed to a lined page which has been affixed to the card. There is some show through, resulting in a a couple of areas with a shiny appearance, not affecting the signature in the least. R&R COA.