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| Number | KM# 135.1 |
|---|---|
| Country | Sri Lanka |
| Period | Republic of Sri Lanka (1972 - 2023) |
| Currency | Sri Lankan rupee |
| Coin type | Circulation coins |
| Denomination | 50 cents |
| Currency rate | 0.5 LKR = 0.01 USD |
| Year | 1972 - 1978 |
| Edge type | Reeded with a groove |
| Shape | Round |
| Alignment | Medal (0°) |
| Composition | Copper-Nickel |
| Weight (g) | 5.5 |
| Diameter (mm) | 21 |
| Thickness (mm) | 2 |
![]() | Coat of arms |
|---|
![]() | Legend |
|---|
| Year | Mintage | Rarity | Value, USD | ||
|---|---|---|---|---|---|
| UNC | BU | Proof | |||
| 1978 | 66.010.000 | - | 20.000 | A | $ 0.27 |
| 1975 | 34.000.000 | - | + | ||
| 1972 | 11.000.000 | - | - | ||
