(!!!) 211D=VT-4-B Western Electric nickel base used/60% mid-1920's - reboxed (61.5ma)

211D=VT-4-B Western Electric nickel base used mid-1920's - reboxed - some pitting / oxidation / blemishes on base - see photo

61.5ma (60%)

Gm=2900 (80%)

1 TUBE ONLY - NOT A PAIR

Tested on Amplitrex 

Vplate=500VDC

Vgrid=-1VDC

Good Ma range = 100 - 120ma

Good Gm range = 3600 - 4000

Recommended for

SET amps under 1000Vplate