The VT-4B is the military version of the UV211. The first is marked U. S. ARMY, VT CG 4B. The second example was also made by GE and the stem is marked UV211.

Length = 7.87" Diameter = 2.20"
Max voltage = 1000
Max current = 150 ma
Fil voltage = 10
Fil current = 6.5 amps         GOTO INDEX