| Sparks-Withington Co. | |||
| Model: 666 | Chassis: | Year: Pre October 1936 | |
| Power: | Circuit: | IF: | |
| Tubes: | |||
| Bands: | |||
Resources:
|
|||
| Riders 6 (VI) SPARTON 6-9 | |||
| Riders 6 (VI) SPARTON 6-10 | |||
| Riders 7 (VII) SPARTON 7-16 | |||
| Riders 18 (XVIII) SPARTON 18-1 | |||
| Riders 18 (XVIII) SPARTON 18-2 | |||