Measured on a Hickok 6000 where 1250 is considered new. Negative for gas/shorts

Zaeux (with original box) I63 B1B4 1275/1200 ((SOLD))
Mullard (w original box) B0G 1200/1225 ((SOLD))
Mullard IEC B--- (code not completely visible) 1450/1150
Mullard I63 B5B2 1200/1400 ((SOLD))

Mullard, Tungsram labled. I63 B0H4. Measures 1300/1100 (last photo)(SOLD)

Liquid Bottle Fluid Glass bottle Drinkware


Font Handwriting Rectangle Poster Magenta


Fluid Automotive tire Drink Gas Liquid