| Frame | Model type | Establish year | Name |
|---|---|---|---|
| Model NA11A | |||
| 100001 | RG50EW | 1983 | RG50Γ (gamma) |
| 124153 | RG50EW-2 | 1984 | |
| 138128 | RG50EW-3 | 1985 | |
| 152002 | RG50EW-4 | 1986 | |
| 162966 | RG50EWH | 1987 | |
| RG50EWWH | 1987 | ||
| 171154 | RG50EWCJ | 1989 | |
| RG50EWJ | 1988 | ||
| 179306 | RG50EWCL | 1990 | |
| 185243 | RG50EWCM | 1991 | |
| 197018 | RG50EWCR | 1994 | |
| 198293 | RG50EWCS | 1995 | |