Branded Mullard
Round Tip
- Base
- Brown
- Bottle Height
- Tall Bottle
- Bottle Shape
- Skinny Bottle
- Code On Tube
- xf4 L1D
- Country
- Holland
- Factory Code
- L - M.B.L.E. Mazda, Bruxelles, L - M.B.L.E. Mazda, Bruxelles
- Glass Color
- Clear Glass
- Mica
- Double
- Other Marks
- Hole in guide pin.
- Permanentid
- 9qwb0hwm
- Pin Color
- Silver Pins
- Plate Color
- Matte Gray
- Plate Look
- Stapled
- Tip Shape
- Round Tip
- Year
- 1961
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