Batterieröhren

Noval B9A 9-Pin tube-valve-base-Röhrensockel
often used in car radios 12V applications

Loctal 8-pin, B8G
works good with very low voltage
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Loctal base
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P8A (8pin Aussenkontakt/Topfsockel) with 9mm Topcap
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Pico 7 Miniature B7G base
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Noval B9A 9-Pin base
doubletriode for 12V applications
very rare!
ECC 86 (=6GM8...

Pico 7 Miniature B7G base
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close to DL1
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Europa tube-valve-base 4-pin B4, 4A or
battery tube for Uf=2V (be careful heaterwires are ver...