Guglielmo Marconi
Guglielmo Marconi was an Italian electrical engineer, inventor, and politician known for his creation of a practical radio wave-based wireless telegraph system. This led to his being largely 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."
- Origin
- Born 1874 in Bologna, Italy ยท Died 1937
- Associated with
- University of St Andrews
- Held office
- senator of the Kingdom of Italy
- Studied at
- University of Bologna
Also searched as G. Marconi
Read the full Wikipedia article → Biography and portrait: Wikipedia & Wikidata
Guglielmo Marconi autograph value
Data collected from: Jun 2026 to Jul 2026We have recorded 3 sales of Guglielmo Marconi memorabilia between Jun 2026 and Jul 2026. The median sale is $398 and the average is $599; the highest recorded sale is $1,300. 3 sales have closed in the last 90 days.
Median sale
$398
midpoint of all 3 sales
Average sale
$599
mean of all 3 sales
Sold in last 90 days
3
$1,798 of turnover
Highest sale
$1,300
across all 3 sales
1 of these 3 sales closed through an accepted Best Offer, where eBay publishes the listing price rather than the amount paid. Those figures are upper bounds, so the median and the average above read a little high.
- Source completed eBay listings, archived daily
- Floor sales of $50 and up; sweeps search from $75
- * best offer accepted. eBay shows the listing price, not the amount paid
Recent Guglielmo Marconi sales
3 most recent of 3| Sold date | Item | Price | Category |
|---|---|---|---|
| 2026-07-31 | 1915 "Final Voyage of Lusitania" Guglielmo Marconi on Board Tragic Ocean Photo2026-07-31 | $1,299.99* | Other memorabilia |
| 2026-06-19 | 1952 Topps LOOK 'N SEE #69 GUGLIELMO MARCONI PSA 7.5 NM+ INVENTOR - Centered!2026-06-19 | $99.99 | Trading cards |
| 2026-06-15 | 1952 Topps Look N See #69 GUGLIELMO MARCONI PSA 8 NM-MT 314197782026-06-15 | $398.46 | Trading cards |