(!!) (Recommended Pair) 5V3=5AU4 Sylvania NOS 1960's (54-54/40 and 54-56/40)
$ 37.99
1 pair) 5V3=5AU4 Sylvania NOS 1960's
1 tube) 54/40 and 54/40 some vertical scratches on bottom edge of base
1 tube) 54/40 and 56/40
(5AU4=5V @ 3.75A Filament, PIV=1400V, Imax=200ma)
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