Modern vacuum tubes, mostly miniature style
A collection of electron tubes. From left to right: 5676 (mini triode) EAA91 (dual diode) 1T4 / DF91 (battery tube pentode) ECC82 (dual triode) ECF80 (triode and pentode in one tube) EZ80 (dual power rectifier diode) Probably DY86 (high voltage diode ) EY88 (power diode) 2SH27L in an inappropriate socket (Russian pentode)
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