Artist: Hydra
 | Hydra | Capricorn 2429 120 | UK 1974 | 25 € |
- Hydra  | ||||
 | Hydra | Capricorn CP 0130 | USA 1974 | 10 € |
| - Hydra | ||||
| Hydra | Capricorn 2429 130 | UK 1975 | 10 € |
| - Land Of Money | ||||
| Hydra | Capricorn CP 0157 | USA 1975 | 10 € |
| - Land Of Money | ||||
| Hydra | Polydor 2391 266 | UK 1977 | 10 € |
| - Rock The World | ||||
| Hydra | Polydor PD 1-6096 | USA 1977 | 10 € |
| - Rock The World | ||||