(!!!) (Best Pair) 30 Brimar BVA made in USA but might be made in UK in white boxes 1940's (3.1ma and 3.3ma)
$35.99
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1 Pair) 30 Brimar BVA made in USA but might be made in UK in white boxes 1940's 1 tube) 3.1ma Gm=9001 tube) 3.3ma Gm=900 NOS Ma = 3ma NOS Gm = 800-900
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