| Model Num | Machine S/N Base | Machine S/N First | Machine S/N Last |
|---|---|---|---|
| GD623 | * | 30001 | 30141 |
| Misc: | |||
| GD621 | * | 10001 | 10025 |
| Misc: | |||
| GD525 | * | 50001 | 55006 |
| Misc: Use with 238-63-12301 Cylinder | |||
| GD525 | * | 60001 | 60049 |
| Misc: Use with 238-63-12301 Cylinder | |||
| GD615 | GD615A-1 | 50001 | UP |
| Misc: | |||
| GD625 | GD625A-1 | 50001 | UP |
| Misc: | |||
| GD625 | GD625A-1A | 60001 | UP |
| Misc: | |||
| GD625 | GD625A-1C | 60001 | UP |
| Misc: | |||
| GD611 | * | 10001 | 10064 |
| Misc: | |||