| Issuer | Sudan |
| Year | 1780 |
| Type | Standard circulation coin |
| Value | Riyal |
| Currency | |
| Composition | Silver (.833) |
| Weight | 28 g |
| Dimensions | 41 mm |
| Thickness | 2.5 mm |
| Shape and Technique | Round Milled |
| Orientation | Medal alignment ↑↑ |
| Engraver(s) | |
| In circulation to | |
| Reference(s) |
| Obverse description | Right facing portrait of Empress Maria Theresia of Habsburg. Countermark: `احُمد ع` = Ahmad A |
| Obverse script | Arabic, Latin |
| Obverse lettering | M·THERESIA·D·G· R·IMP·HU·BO·REG·
احُمد ع
S·F· (Translation: Maria-Theresia, by the Grace of God, Roman Empress, Queen of Hungary and Bohemia Ahmad A) |
| Reverse description | Imperial double-headed eagle with the arms of Austria at the centre, surrounded by four quarters representing Hungary, Bohemia, Burgundy and Burgau (Günzburg). |
| Reverse script | Latin |
| Reverse lettering | ARCHID·AVST·DUX· BURG·CO·TYR·1780·X (Translation: Archduchess of Austria, duchess of Burgundy, comtess of Tyrol) |
| Edge | Inscripted |
| Mint | |
| Mintage | 1780 X - - |
| Catalog ID | 4121970510 |
| Comments |
