This is the 4 volts AC version of the former B2043 /
RENS1823d DC-mains tube. Simultaneously it was
the first indirectly heated output tube for AC-
mains operation in continental Europe. It was
available in 2 base versions.
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Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 42
E453*Box
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