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12SK7=VT-131 GE used/good 1940's (8.0ma)

12SK7=VT-131 GE used/good 1940's (8.0ma)

$ 4.29

12SK7=VT-131 GE used/good 1940's

8.0ma
Gm=1600

 

Good used Ma range 7.5-8ma

Good used Gm 1600-1800

 

 

for:

Collins TCS14 1944

See more: vacuum tube
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