| Model Num | Machine S/N Base | Machine S/N First | Machine S/N Last |
|---|---|---|---|
| 631E, 631E II | 4LD | 1 | 269 |
| Misc: | |||
| 631E, 631E II | 6PC | 1 | 597 |
| Misc: | |||
| 631D | 28W | 2193 | UP |
| Misc: | |||
| 631D | 29W | 1500 | UP |
| Misc: | |||
| 637D | 20W | 533 | UP |
| Misc: | |||
| 637D | 21W | 502 | UP |
| Misc: | |||
| 637D | 22W | 1138 | UP |
| Misc: | |||
| 637D | 23W | 1102 | UP |
| Misc: | |||
| 637D | 4JB | 38 | UP |
| Misc: | |||
| 637E, 637E II | 1FB | 1 | UP |
| Misc: Use with 4T9318 Head | |||
| 637E, 637E II | 1JB | 1 | UP |
| Misc: Use with 4T9318 Head | |||
| 637E, 637E II | 1HB | 1 | UP |
| Misc: Use with 4T9318 Head | |||
| 637E, 637E II | 1LB | 1 | UP |
| Misc: Use with 4T9318 Head | |||
| 637E, 637E II | 7CB | 1 | UP |
| Misc: Use with 4T9318 Head | |||
| 631E, 631E II | 1BB | 1 | UP |
| Misc: | |||