| Model Num | Machine S/N Base | Machine S/N First | Machine S/N Last |
|---|---|---|---|
| 773, 773B, 773D | 63W | 1271 | 4199 |
| 772, 772B | 64W | 300 | UP |
| 773, 773B, 773D | 63W | 4200 | UP |
| 773, 773B, 773D | 7ER | 1 | UP |
| 773, 773B, 773D | 7CS | 1 | UP |
| 773E | BDA | 1 | 515 |
| 775B, 775D | 7XJ | 1 | 199 |
| 775B, 775D | 6KR | 1 | UP |
| 775B, 775D | 7XJ | 200 | UP |
| 775B, 775D | 8AS | 1 | UP |
| 775E | BEC | 1 | 471 |
| 772, 772B | 64W | 168 | 299 |