| Machine S/N Base | Machine S/N First | Machine S/N Last |
|---|---|---|
| 51U | 1 | 589 |
| Misc: | ||
| 51U | 590 | 2033 |
| Misc: Cylinder design with 1 stop seal | ||
| 76U | 694 | 1199 |
| Misc: Cylinder design with 1 stop seal | ||
| 51U | 2034 | 2831 |
| Misc: Cylinder design with 1 stop seal | ||
| 76U | 1200 | 2728 |
| Misc: Cylinder design with 1 stop seal | ||
| 20S | 190 | UP |
| Misc: | ||