| Issuer | Sri Lanka (1972-date) |
| Year | 1978 |
| Type | Circulating commemorative coins |
| Value | 1 Rupee |
| Currency | Rupee (1972-date) |
| Composition | Copper-nickel |
| Weight | 7.13 g |
| Dimensions | 25.4 mm |
| Thickness | 1.9 mm |
| Shape and Technique | Round Milled |
| Orientation | Medal alignment ↑↑ |
| Engraver(s) | |
| In circulation to | |
| Reference(s) | KM#144 |
| Obverse description | The Armorial Ensign of Sri Lanka. |
| Obverse script | |
| Obverse lettering | |
| Reverse description | A profile image of the President J. R. Jayewardene in the center, with value `ONE RUPEE` in Sinhala at the top of the coin and in Tamil and English on either side, with the date `1978.02.04` at the bottom and `Sri Lanka` in Sinhala below the date. |
| Reverse script | |
| Reverse lettering | |
| Edge | Security |
| Mint | |
| Mintage | 1978 - Royal Mint - 1 997 400 1978 - Royal Mint; Proof - 20 000 1978 - Royal Mint; Right shoulder straight - 2 600 |
| Catalog ID | 2002538950 |
| Comments |
