Marconi

Brand on Tube Marconi
Real Tube Manufacturer Mullard


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

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