1/2 Tetarteron - Manuel I Komnenos
€1.00
| Issuer | Byzantine Empire |
| Year | 1143-1180 |
| Type | Standard circulation coin |
| Value | 1/2 Tetarteron = 1⁄1728 Hyperpyron |
| Currency | First Hyperpyron Nomisma (1092-cca. 1300) |
| Composition | Bronze |
| Weight | 2 g |
| Dimensions | 16 mm |
| Thickness | |
| Shape and Technique | Round (irregular) Hammered |
| Orientation | |
| Engraver(s) | |
| In circulation to | |
| Reference(s) | BCV#1979 |