3 TELEFUNKEN E92CC tubes with diamond mark + 1 ADZAM SQ E92CC tube. Telefunken, ADZAM, low-frequency voltage amplification dual triode vacuum tubes, miniature tubes. ‐ Mercari: Shop from Japan

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3 TELEFUNKEN E92CC tubes with diamond mark + 1 ADZAM SQ E92CC tube. Telefunken, ADZAM, low-frequency voltage amplification dual triode vacuum tubes, miniature tubes. ‐ Mercari: Shop from Japan