I lowered the price and re-listed it. Unused item! (Conductivity, measuring instrument checked) Set of 4 heatproof beam tubes are one of the few brown base types in the UK GOLD LION. Some of the dating codes have been rubbed off, but all 4 are thought to be a common 8104. Measured value 74/66/66/78 (rejection value 44) with original box and measuring table ※The measured values represent the GM values measured by the testing machine TV-7 (Kojima Yosuke)
Accessories: original box, measuring table