Versions
| Title, Format | Label | Cat# | Country | Year | |
|---|---|---|---|---|---|
| 1.2.1. (7") | Def Jam Recordings | 650780 7 | UK | 1986 | |
| 1.2.1. (12") | CBS | DEF 650828 6 | Netherlands | 1986 | |
| 1.2.1. (12") | Def Jam Recordings | 44-06730 | US | 1986 | |
| 1.2.1. (12") | Def Jam Recordings | 650780 6 | UK | 1986 | |
| 1.2.1. (12", W/Lbl) | Def Jam Recordings | 650780 6 | UK | 1986 |