| Issuer | Italy |
| Year | 1974 |
| Type | Pattern |
| Value | 100 Lire |
| Currency | Lira (1861-2001) |
| Composition | Acmonital |
| Weight | 8 g |
| Dimensions | 27.8 mm |
| Thickness | 2.0 mm |
| Shape and Technique | Round Milled |
| Orientation | Coin alignment ↑↓ |
| Engraver(s) | Guerrino Mattia Monassi |
| In circulation to | |
| Reference(s) | KM#Pr89 |
| Obverse description | Facing head of Guglielmo Marconi, inventor of the radio. Below a five-pointed star and the name of the engraver. |
| Obverse script | Latin |
| Obverse lettering | REPVBBLICA ITALIANA
MONASSI (Translation: Italian Republic Monassi) |
| Reverse description | Radio transmitter antenna invented by Marconi with in the high vertex a representation of a radio wave. On the right the dates of the anniversary on two lines, while on the left indication of the value (L. 100) and mint mark (R) always on two lines. The word `PROVA` is added above the value |
| Reverse script | Latin |
| Reverse lettering | PROVA 1874 1974 L.100 GUGLIELMO MARCONI |
| Edge | Reeded |
| Mint | R Rome, Italy (476-date) |
| Mintage | 1974 R - - 567 1974 R - in folder with km#102 - |
| Catalog ID | 6141599360 |
| Comments |
