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(!!!) (~ Recommended RCA Pair ~) 12B4A RCA NOS 1960's (32.5ma and 33ma)

(!!!) (~ Recommended RCA Pair ~) 12B4A RCA NOS 1960's (32.5ma and 33ma)

$ 15.99

1 pair) 12B4A RCA NOS 1956-1960's same build, different getter halos
1 tube) 32.5ma Gm=5700 "O" getter halo
1 tube) 33.0ma Gm=6000 "U" getter halo

 

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