(!!!!) (Best Pair) CV378=GZ37 Mullard NOS 1966 (50-51/40 x 2 tubes) 1% matched
$369.99
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1 Matched Pair) CV378=GZ37 Mullard England NOS all with (XD=1966) date codes in original boxes 1 tube) 50/40 and 51/40 (XD) 1S1-B6C3 1 tube) 50/40 and 51/40 (XD) 1S1-B6D2 Test results on TV-7D/U Recommended for - SET amps- Allnic H-3000 phono- Allnic 300B SET- Art Audio 300B amp- Art Audio PX25 amp
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$350
$369.99
(+$19.99)