Wade Bequest collection of valves: early R-type triode radio valve
- PART OF:
- Wade Bequest collection of valves
Wade Bequest collection of valves: early R-type triode radio valve. With B4-1 base and top seal. With papel label: W72.
Wade Bequest collection of valves: early R-type triode radio valve. With B4-1 base and top seal. With papel label: W72.