W3 Wuncell by Cossor 1925 dull emitter audio output valve – WR1 Cossor Wuncell
Cossor W3 boxed £ 400 pair.
Cossor W3 boxed green top pip £ 450 pair.
Cossor WR1 Wuncell boxed £ 450 pair.
Description
The Cossor W3 dates from 1924! They also come with original boxes, a radio’s delight! Like other Cossor of this type the W3 is a dull emitter with oxide-coated filament and green paint on top pip. We also show a pair of W3 without green paint. Both W3 are shown from the right of main picture.
The Cossor WR1 Cossor from 1924, like above W3 the filament is tungsten oxide-coated and is a dull emitter triode with a built-in filament resistance of 8 Ohms. The Wuncell has also a shorting screw to operate at 2 volts LT for accumulators as well as six volts as bright emitter. Amazing valve!
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