1 Piastra - Ferdinando IV - Return of King and Queen from Austria (1791)
Features
| Denomination | 1 Piastra |
| Catalog Number | KM# 212 |
| Weight (g) | 27.53 |
| Diameter (mm) | 41 |
| Shape: | Round |
| Composition: | Silver (.833) |
| Not Magnetic | |
| Metal Value (USD) | 17.49 |
| Orientation | Coin orientation ↑↓ |
| Commemorative | |
| Demonetized |
| Year | Mintage | Comment | Rarity |
|---|---|---|---|
| 1791 AP | 9,450 | Unknown | |
| 1791 DPAPM | Unknown |