| Model Num | Machine S/N Base | Machine S/N First | Machine S/N Last |
|---|---|---|---|
| 1450B, 1455B | |||
| Misc: optional tilt hydraulic circuit | |||
| 1550 | * | 8500001 | 8500060 |
| Misc: Mechanical Angle Dozer models | |||
| 1550 | * | JAK0010501 | UP |
| Misc: Mechanical Angle Dozer models | |||
| 1550 | * | 8500001 | 8500060 |
| Misc: With optional Tilt Hydraulic circuit | |||
| 1550 | * | JAK0010501 | UP |
| Misc: With optional Tilt Hydraulic circuit | |||
| 1450B, 1455B | |||
| Misc: Mechanical Angle Dozer models with | |||