unknown tube type

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I need help in identifying an unknown tube. I recently purchased a rare (50 pairs made) Antony Michaelson Chronos mono tube amp pair. The driver stage has 2 tubes. One is a 12AT7 and the other is a 9 pin, slightly taller tube with 2 grid plates at the top. There are no markings on this GE tube? Does anyone know a way to identify this tube? thanks in advance, Rispoli

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Topic - unknown tube type - rispoli_1 19:11:37 01/03/07 (5)

8 EL34, 2 ECC88, 1 ECC83 - Gofast 21:55:20 01/06/07 (0)

Re: unknown tube type - elektron 20:00:56 01/03/07 (3)

Re: unknown tube type - rispoli_1 21:29:47 01/03/07 (2)

Re: unknown tube type - kstagger 05:11:12 01/04/07 (1)

Re: unknown tube type - rispoli_1 09:02:23 01/04/07 (0)

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