Nobel Prize–winning, Italian-born engineer (1874–1937) whose development of “wireless telegraphy,” better known to the world at large as radio, would come to exert a profound and immeasurable influence not only on communications, but on modern civilization itself. Bold ink endorsement, “Guglielmo Marconi,” on the reverse of an 8.25 x 3 check made out to him by Isaac M. Hessberg for $125.00 and dated March 25, 1931. Folds (one touching signature), otherwise fine condition. R&R COA.
