20 Lire
| Bronzital (92% Copper, 6% Aluminium, 2% Nickel) | 3.6 g | 21.25 mm |
| Issuer | Italy |
|---|---|
| Period | Republic (1946-date) |
| Type | Standard circulation coin |
| Years | 1957-2001 |
| Value | 20 Lire (20 ITL) |
| Currency | Lira (1861-2001) |
| Composition | Bronzital (92% Copper, 6% Aluminium, 2% Nickel) |
| Weight | 3.6 g |
| Diameter | 21.25 mm |
| Thickness | 1.67 mm |
| Shape | Round |
| Technique | Milled |
| Orientation | Coin alignment ↑↓ |
| Demonetized | 28 February 2002 |
| Updated | 2024-10-05 |
| Numista | N#1113 |
|---|---|
| Rarity index | 3% |
Reverse
Oak branch in the center with the denomination to the left and the mintmark below and the date to the right
Script: Latin
Lettering:
L.20
R 1971
Translation:
20 Lire
R 1971
Engraver: Pietro Giampaoli
Edge
Reeded (1957-1959)
Smooth (1968-2001)
Comment
KM#97.1: Reeded edge
KM#97.2: Smooth edge
The Bronzital or Aluminum Bronze was used for the first time for this coin. In addition to copper, it contained 7.5 to 8.5 parts of aluminum and 0.3 to 0.6 parts of titanium. This last element made the processing of the alloy difficult and for this reason in 1959 the production of the 20 lire was suspended.
In 1967 the Bronzital alloy was modified assuming the following composition: aluminum 6%, nickel 2%, the rest (92%) copper. The technical difficulties of processing were thus overcome and minting resumed in 1968.
