| Frame | Model type | Establish year | Name |
|---|---|---|---|
| Model AC01 | |||
| 1000037 | MB50Z | 1979 | MB50 |
| 1100001 | MB50A1 | 1980 | MB50 flat handle |
| MB50A2 | 1980 | MB5 semi-up handle | |
| Frame | Model type | Establish year | Name |
|---|---|---|---|
| Model AC01 | |||
| 1000037 | MB50Z | 1979 | MB50 |
| 1100001 | MB50A1 | 1980 | MB50 flat handle |
| MB50A2 | 1980 | MB5 semi-up handle | |