56 RCA no name NOS 1940's getter halo screen loose at bottom of tube (6.5ma)
$ 7.99
56 RCA no name NOS 1940's getter halo screen loose at bottom of tube, this does not effect tube performance
6.5ma
Gm=1600
Tested on Amplitrex:
Vplate=250V
Vgrid=-13.5V
Iplate good range = 4.5-5.5ma
Gm=1400
(Vfilament = 2.5 volts)
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