The VT-12 was rated for about 5 watts. This tube also employed the construction of that shown in the tube listed as the VT-14 (early). 
General Electric VT-12
Low Power Transmitting Triode
1918
The VT-12 was rated for about 5 watts. This tube also employed the construction of that shown in the tube listed as the VT-14 (early).
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