Verdi: Un Ballo in Maschera (complete opera live 1957) with Maria Callas, Giuseppe di Stefano, Gianandrea Gavazzeni, Orchestra & Chorus of La Scala, Milan
| Country | USA |
| Brand | Mount-It! |
| Manufacturer | Mount-It! |
| Binding | Electronics |
| Color | Black |
| UnitCount | 1 |
| UPCs | 810041738158 |
| EANs | 0810041738158 |
| ReleaseDate | 0000-00-00 |