Wade Bequest collection of valves: Rogers radio valve type VT61A
Wade Bequest collection of valves: Rogers radio valve type VT61A. Marked VT61A / 10 / 10E/142 on bulb and Air Ministry symbol on base. With B5 bulb and two top caps. ST bulb.
Wade Bequest collection of valves: Rogers radio valve type VT61A. Marked VT61A / 10 / 10E/142 on bulb and Air Ministry symbol on base. With B5 bulb and two top caps. ST bulb.