Guglielmo Marconi Autographs
Guglielmo Giovanni Maria Marconi, 1st Marquess of Marconi (/mɑːrˈkoʊni/; Italian: ; 25 April 1874 – 20 July 1937) was an Italian electrical engineer, inventor, and politician known for his creation of a practical radio wave-based wireless telegraph system. This led to Marconi being credited as the inventor of radio and sharing the 1909 Nobel Prize in Physics with Ferdinand Braun "in recognition of their contributions to the development of wireless telegraphy".\nHis work laid the foundation for the development of radio, television, and all modern wireless communication systems.
Marconi was also an entrepreneur and businessman who founded the Wireless Telegraph & Signal Company (which became the Marconi Company) in the United Kingdom in 1897. In 1929, Marconi was ennobled as a marquess (marchese) by Victor Emmanuel III. In 1931, he set up Vatican Radio for Pope Pius XI.
Guglielmo Giovanni Maria Marconi was born in Palazzo Marescalchi in Bologna on 25 April 1874, the second son of Giuseppe Marconi (an Italian aristocratic landowner from Porretta Terme who lived in the countryside of Pontecchio) and his Irish wife Annie Jameson (daughter of Andrew Jameson of Daphne Castle in County Wexford, a land agent, and wife Margaret, daughter of James Cochrane of Glen Lodge, Sligo, and sister of Scottish naturalist James Sligo Jameson, and granddaughter of John Jameson of Dublin, the Scottish founder of whiskey distillers Jameson & Sons). His father, who was a widower with a son, Luigi, married Jameson on 16 April 1864 in Boulogne-sur-Mer, France. Alfonso, Marconi's older brother, was born in 1865. Between the ages of two and six, Marconi and Alfonso lived with their mother in the English town of Bedford. Having an Irish mother helped explain Marconi's many activities in Great Britain and Ireland. When he was three years old, on 4 May 1877, Giuseppe Marconi decided to obtain British citizenship. Marconi could have thus also opted for British citizenship anytime, as both his parents had British citizenship.
Read more about Guglielmo Marconi on Wikipedia
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Traded items with a signature of Guglielmo Marconi
The most expensive item with a signature of Guglielmo Marconi (Guglielmo Marconi Autographed Signed Mounted Photo BAS BECKETT LOA) was sold in April 2026 for $2,500.00 while the cheapest item (Guglielmo Marconi Hand Signed Autographed Paper Italian Inventor Radio Telegraph) found a new owner for $38.99 in April 2026. The month with the most items sold (4) was April 2026 with an average selling price of $1,499.99 for an autographed item of Guglielmo Marconi. Sold items reached their highest average selling price in April 2026 with $1,499.99 and the month that saw the lowest prices with $136.27 was November 2011. In average, an autographed item from Guglielmo Marconi is worth $287.23.
Most recently, these items with a signature of Guglielmo Marconi were sold on eBay - click here for more items.
| Picture | Item Title | Price | Store |
 | 1932 Guglielmo Marconi Handwritten Signed Letter BAS BECKETT LOA | $999.99 |  |
 | 2018 Leaf Executive Guglielmo Marconi Signed AUTO Cut 1/1 PSA DNA JSA BAS | $1,999.99 | |
 | Framed Guglielmo Marconi Signed Capital Stock for Marconi Wireless Telegraph Co | $300.00 | |
| Framed Guglielmo Marconi Signed Capital Stock for Marconi Wireless Telegraph Co | $167.50 | |
| Guglielmo Marconi & King Edward VII + Alexandra autograph, signed album page mou | $663.78 | |
| Guglielmo Marconi (1874-1937) - fine document signed by the Nobel Prize winner | $510.00 | |
| Guglielmo Marconi (inventor radio) – excellent signature matted with wax-seal | $390.00 | |
| Guglielmo Marconi 1918 autograph letter signed #A12 | $1,490.00 | |
 | Guglielmo Marconi Autographed Signed Mounted Photo BAS BECKETT LOA | $2,500.00 | |
| GUGLIELMO MARCONI FRAMED & MATTED PHOTO & CUT SIGNATURE!!! MUST SEE!!! | $235.00 | |
 | Guglielmo Marconi Hand Signed Autographed Paper Italian Inventor Radio Telegraph | $38.99 | |
| Guglielmo Marconi Handwritten Signed Letter and photograph Framed. | $499.00 | |
| Guglielmo Marconi Italian Inventor & Engineer ''Radio'' Signed Post Card | $800.00 | |
| Guglielmo Marconi ORIGINAL VINTAGE 1930 SIGNED FIRST DAY COVER FDC AUTOGRAPHED | $235.50 | |
| Guglielmo Marconi Signed 2x4 Cut PSA/DNA AUTO Invented the Radio Deceased 1937 | $287.23 | |
