| Model Num | Machine S/N Base | Machine S/N First | Machine S/N Last |
|---|---|---|---|
| 776, 776B, 776C | 2TK | 1 | UP |
| 776D | 5ER | 1 | UP |
| 776D | AFS | 1 | 96 |
| 777, 777B, 777C | 4XJ | 1 | UP |
| 777, 777B, 777C | 4YC | 1 | UP |
| 777, 777B, 777C | 84A | 1284 | UP |
| 777D | 2YW | 1 | UP |
| 777D | 3PR | 1 | UP |
| 777D | AGC | 1 | 1454 |
| 777D | AGY | 1 | 199 |
| 776, 776B, 776C | 6JC | 1 | UP |