| Sparks-Withington Co. | |||
| Model: 10-21 | Chassis: | Year: Pre 1949 | |
| Power: | Circuit: | IF: | |
| Tubes: | |||
| Bands: | |||
Resources:
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| Beitmans 1942 136 | |||
| Riders 17 (XVII) SPARTON 17-3 | |||
| Riders 17 (XVII) SPARTON 17-4 | |||
| Riders 17 (XVII) SPARTON 17-5 | |||
| Riders 17 (XVII) SPARTON 17-6 | |||
| Riders 19 (XIX) SPARTON 19-6 | |||
| Riders 19 (XIX) SPARTON 19-7 | |||
| Riders 19 (XIX) SPARTON 19-8 | |||
| Riders 19 (XIX) SPARTON 19-9 | |||
| Riders 19 (XIX) SPARTON 19-10 | |||
| Riders 19 (XIX) SPARTON 19-11 | |||
| Riders 19 (XIX) SPARTON 19-12 | |||
| Riders 19 (XIX) SPARTON 19-13 | |||