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20 Rials - Qaboos Sultan Qaboos 20th Reign Anniversary
| Issuer | Oman |
| Year | 1990 |
| Type | Non-circulating coin |
| Value | 20 Rials |
| Currency | Rial (1972-date) |
| Composition | Gold (.9167) |
| Weight | 48.65 g |
| Dimensions | |
| Thickness | |
| Shape and Technique | Round Milled |
| Orientation | |
| Engraver(s) | |
| In circulation to | |
| Reference(s) | KM#137.1 |
| Obverse description | Crowned Oman national emblem consisting of a khanjar (dagger) inside its sheath that is superimposed upon two crossed swords, within designed circle |
| Obverse script | |
| Obverse lettering | |
| Reverse description | Denomination within designed circle with dates below flanked by leaves |
| Reverse script | |
| Reverse lettering | |
| Edge | |
| Mint | |
| Mintage | 1411 (1990) - - 500
|
| Catalog ID | 1534646180 |
| Comments | |