| Model Num | Machine S/N Base | Machine S/N First | Machine S/N Last |
|---|---|---|---|
| 627B | 33V | 495 | UP |
| Misc: | |||
| 627B | 37V | 607 | 723 |
| Misc: | |||
| 627B | 38V | 788 | 985 |
| Misc: | |||
| 621 | 37G | 1975 | UP |
| Misc: Field replacement, Piston seal | |||
| 621 | 40G | 357 | UP |
| Misc: Field replacement, Piston seal | |||
| 621B | 31V | 1 | 1337 |
| Misc: Piston seal | |||
| 621B | 36V | 1153 | 1502 |
| Misc: Piston seal | |||
| 621B | 73V | 720 | 720 |
| Misc: Piston seal | |||
| 621B | 73V | 723 | 725 |
| Misc: Piston seal | |||
| 621B | 73V | 732 | 819 |
| Misc: Piston seal | |||
| 627B | 32V | 444 | UP |
| Misc: | |||