"in recognition of their contributions to the development of wireless telegraphy"

Guglielmo Marconi
Button 1/2 of prize
Button Italy
Button born 1874, died 1937
Button Marconi Wireless Telegraph Co. Ltd., London, England, UK
 
Karl Ferdinand Braun
Button 1/2 of prize
 Button Germany
Button born 1850, died 1918
Button CA - Strasbourg University, Strasbourg, Alsace (then Germany)
Button AA  - Strasbourg University
Button WA - Strasbourg University

Additional Information:

Guglielmo Marconi: