Information
| Name | Johannus Opus 20 |
| System | Analogue |
| In production | 1976 .. 1983 |
| Comments | - |
| Serial number | Find more info here |
Photos
| Name | Johannus Opus 20 |
| System | Analogue |
| In production | 1976 .. 1983 |
| Comments | - |
| Serial number | Find more info here |