Branded Marconi

Pinched Tip

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

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