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| Number | KM# 20 |
|---|---|
| Country | Ireland |
| Period | Republic of Ireland (Éire) (1969 - 2000) |
| Currency | Irish pound |
| Coin type | Circulation coins |
| Denomination | 1 penny |
| Year | 1971 - 1988 |
| Edge type | Smooth |
| Shape | Round |
| Alignment | Medal (0°) |
| Composition | Bronze |
| Weight (g) | 3.56 |
| Diameter (mm) | 20.32 |
| Thickness (mm) | 1.52 |
![]() | Coat of arms Music Description Legend |
|---|
![]() | Bird Legend Creators: Gabriel Hayes |
|---|
| Year | Mintage | Rarity | Value, USD | ||
|---|---|---|---|---|---|
| UNC | BU | Proof | |||
| 1988 | 56.772.000 | - | - | A | $ 0.19 |
| 1986 | 36.584.000 | - | 6.750 | ||
| 1985 | 19.242.000 | - | - | ||
| 1982 | 54.189.000 | + | - | ||
| 1980 | 86.712.000 | - | - | ||
| 1979 | 21.766.000 | - | - | ||
| 1978 | 25.746.000 | + | - | ||
| 1976 | 38.164.000 | - | - | ||
| 1975 | 10.000.000 | - | - | ||
| 1974 | 10.000.000 | - | - | ||
| 1971 | 100.500.000 | + | 50.000 | ||
