| Model Num | Machine S/N Base | Machine S/N First | Machine S/N Last | 
|---|---|---|---|
| GD525 | * | 60001 | 60049 | 
| Misc: Use with 23A-63-62101 Cylinder | |||
| GD511 | * | 10001 | 10083 | 
| Misc: Use with 23A-63-62101 Cylinder | |||
| GD515 | GD515A-1 | 50001 | UP | 
| Misc: | |||
| GD525 | * | 50001 | 55006 | 
| Misc: Use with 23A-63-62101 Cylinder | |||