French physicist (1859–1906), best known for his pioneering investigation of radioactivity, who shared the 1903 Nobel Prize in Physics with his wife, Marie Curie. Original personal calling card bearing Curie’s name, title, and address, 3.75 x 2.25, January 21, 1905, signed within the text in the third-person in pencil, “Mr. Curie.” Card bears a brief untranslated note in French requesting information from “Mr. De Lannay.” In fine condition. Pre-certified John Reznikoff/PSA/DNA and RR Auction COA.