Valvo

Brand on Tube Valvo
Real Tube Manufacturer Philips


Country Holland
Etched code on Tube 8f6 ⊿4G4
Factory Code ⊿ - Philips, Heerlen
Year 1964
Tip Shape Pinched Tip
Glass Color Clear Glass
Getter D-Getter
Plate Look Mesh
Plate Color Shiny Gray
Valvo by Philips E90F 8f6

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