Valvo by Philips E90F 8f6- Code On Tube
- 8f6 ⊿4G4
- Country
- Holland
- Factory Code
- ⊿ - Philips, Heerlen, ⊿ - Philips, Heerlen
- Getter
- D-Getter
- Glass Color
- Clear Glass
- Permanentid
- znt6c35d
- Plate Color
- Shiny Gray
- Plate Look
- Mesh
- Tip Shape
- Pinched Tip
- Year
- 1964
