Marconi by Mullard ECC83 B339 f92- Code On Tube
- f92 B91
- Country
- Great Britain
- Factory Code
- B - Mullard, Blackburn
- Glass Color
- Clear Glass
- Permanentid
- 6x9stg4e
- Plate Color
- Matte Gray
- Plate Look
- Ribbed / Scale
- Plate Size
- 17mm
- Tip Shape
- Pinched Tip
- Year
- 1959
Branded
