| Model Num | Machine S/N Base | Machine S/N First | Machine S/N Last |
|---|---|---|---|
| 637, 637B | 79P | 1 | 653 |
| 637, 637B | 79P | 661 | 661 |
| 637, 637B | 79P | 664 | 664 |
| 637, 637B | 79P | 682 | 682 |
| 633, 633B, 633C | 66M | 693 | 850 |
| 633, 633B, 633C | 66M | 852 | 861 |
| 633, 633B, 633C | 66M | 866 | 866 |
| 631A, 631B, 631C | 67M | 1 | 5062 |
| 637, 637B | 65M | 1 | 502 |