AZ31 NOS (8 in stock)
By Tube World
$ 34.99
AZ31 NOS original boxes
4 tubes) AZ31 Pope England 1959
3 tubes) AZ31 Philips Miniwatt England NOS 1950's
1 tube) AZ31 Mullard NOS original box 1963
(octal base; 4V @ 1.1A filament)
See more: vacuum tube
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