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(!!!) (Recommended Pair) 30 RCA Cunningham engraved base 1930's low hours/test like new (3.3ma and 3.4ma)

(!!!) (Recommended Pair) 30 RCA Cunningham engraved base 1930's low hours/test like new (3.3ma and 3.4ma)

$ 34.99
 
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1 pair) 30 RCA Cunningham engraved base 1930's low hours/test like new
1 tube) 3.3ma Gm=800 
1 tube) 3.4ma Gm=900

Matched on Amplitrex

NOS Ma = 3.1ma

NOS Gm = 800-900

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