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This exhibit has lost its Type designation but retained the makers name. It is clearly a double triode. The heater is 6.3 V at 0.3 A from test. The pin connections match most small signal double triodes.
The construction of two identical triodes.
The side view.
The thin glass tube envelope is 20 mm in diameter, and excluding the B9A base pins is 48 mm tall.
Reference: Observation.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
a(2)
g1(2)
k(2)
h
h
a(1)
g1(1)
k(1)
hct

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
6.3
0.3,
Updated April 17, 2013.
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