6201=12AT7WA RCA Black Plates "o" getter halo used/like new 1961 (8.6/7.8ma)
$ 19.99
1 low noise tube) 12AT7WA=6201 RCA Black Plates "o" getter halo used/like new 1961
slightly tilted glass
8.6ma Gm=5200
7.8ma Gm=4400
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