- Base
- Black
- Code On Tube
- Xf2 B7G1
- Country
- Great Britain
- Factory Code
- B - Mullard, Blackburn, B - Mullard, Blackburn
- Getter
- O-O Double Getter
- Glass Color
- Clear Glass
- Mica
- Double
- Permanentid
- 4ldh6v1j
- Pin Color
- Silver
- Plate Color
- Matte Gray
- Plate Look
- Smooth
- Tip Shape
- Pinched Tip
