| Brand | Zenith |
|---|---|
| Model | 121-397 |
| Country of Origin | United States |
Check the listing for details. Zenith 6553 121-397 Transistor NOS Vintage Metal Can TO-Style USA. Condition: Open box, Made in United States. Listed at 8.00 USD. Zenith Transistor – Part No. 121-397 (Marked 6553). • Manufacturer: Zenith. • Zenith Part Number: 121-397. • NOS – never installed. • Device Marking: 6553.