Ferranti

Brand on Tube Ferranti
Real Tube Manufacturer Mullard


Country Great Britain
Etched code on Tube f91 B8J
Factory Code B - Mullard, Blackburn
Year 1958
Tip Shape Pinched Tip
Glass Color Clear Glass
Mica Double Mica
Plate Look Ribbed / Scale
Plate Size 17mm
Plate Color Matte Gray
Pin Color Silver Pins
Ferranti ECC83 f91

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