Wade Bequest collection of valves: Rogers Valve radio valve type VT61
Wade Bequest collection of valves: Roegrs Valve radio valve type VT61. Marked 10E/142 on bulb. With B5 and two top caps. Marked with Air Ministry symbol on base.
Wade Bequest collection of valves: Roegrs Valve radio valve type VT61. Marked 10E/142 on bulb. With B5 and two top caps. Marked with Air Ministry symbol on base.