EKUA6845 His Master's Voice (HMV) ”His masters voice” -logo (EKUM) 
EKUA4050 EF Johnson Technologies Cat. No. 122-224-1 
Description
1920-luvun putken pidin hylsyt bakeliittilevyissä.
Specifications
| Generic name | Tube bases and covers |
|---|---|
| Brand | Tuntematon |
| Model name | |
| Model number | |
| Serial number | |
| Usage period | |
| Production period | 1920-luku |
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| Material | |
| Production method | Teollinen |
| Functionality | Ei testattu |
| Sale class | M (?Sold as a whole) |
| Location | Nav 22A |
