Obol - Louis I Rouen mint
€1.00
| Issuer | Unified Carolingian Empire |
| Year | 818-823 |
| Type | Standard circulation coin |
| Value | 1 Obol (1⁄480) |
| Currency | Pound (751-843) |
| Composition | Silver |
| Weight | 0.70 g |
| Dimensions | 16.5 mm |
| Thickness | |
| Shape and Technique | Round (irregular) Hammered |
| Orientation | Variable alignment ↺ |
| Engraver(s) | |
| In circulation to | |
| Reference(s) | Prou Car#–, Nouchy#59 (p.101), Gariel Car#XVIII/115, Morrison#365 |