My guess is

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In Reply to: Tube question - El Menco 12AU7 British? Picture posted by PeterI on April 25, 2025 at 10:58:34:

They're EI made in the former Yugoslavia

Not familiar with that exact type, but their construction is virtually identical to some known EI 12AX7's I have.

Those 12AX7's are fantastic tubes. Nice score.

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Follow Ups Full Thread

Topic - Tube question - El Menco 12AU7 British? Picture - PeterI 10:58:34 04/25/25 (6)

RE: Tube question - El Menco 12AU7 British? Picture - adrianc 06:05:36 05/04/25 (0)

My guess is - Sondek 14:44:28 04/25/25 (2)

RE: My guess is (pic) - PeterI 13:38:59 04/28/25 (1)

RE: My guess is (pic) - Nunki 02:13:20 05/04/25 (0)

Three more - Byrd69 12:55:35 04/25/25 (1)

RE: Three more - PeterI 13:41:37 04/25/25 (0)

Follow Ups

My guess is - Sondek 14:44:28 04/25/25 (2)

RE: My guess is (pic) - PeterI 13:38:59 04/28/25 (1)

RE: My guess is (pic) - Nunki 02:13:20 05/04/25 (0)

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