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ID = 78621
Brand: Apollo アポロ (tube brand) - Nihon Ko-on Kogyo / Taiyo Denshi Kenkyshuso; Tokyo
Tube type:  Triode, vacuum 
Identical to 13M

Base Miniatur-7-Pin-Base B7G, USA 1940
Was used by Radio/TV-reception etc.

Japanese Character printed on the envelope. Bakelite tube base.

Dimensions (WHD)
incl. pins / tip
15 x 41 x mm / 0.59 x 1.61 x inch

Just Qvigstad


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