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(slightly microphonic tube) 12AU7A RCA tall black ribbed plates "D" getter halo used/good 1950's (8.2/8.8ma)
(slightly microphonic tube) 12AU7A RCA tall black ribbed plates "D" getter halo used/good 1950's (8.2/8.8ma)
$ 15.99
1 slightly microphonic tube) JRC-12AU7 RCA tall black ribbed plates "D" getter halo tests used/good 1950's no printing
8.2ma Gm=1800
8.6ma Gm=1800
See more: vacuum tube
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 12AU7A RCA tall black ribbed plates "D" getter halo used/good 1950's (8.2/8.8ma) "Pin It")
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