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 | Vintage M11 FVC 520 Tube For Carl Zeissphotomultiplier detector tube Germany EUR 50.0 EEK: Category : Elektronenröhren & Valves Seller : ana4193(169, 100.0%) |  | Vintage M11 FVC 520 Tube For Carl Zeissphotomultiplier detector tube Germany EUR 50.0 EEK: Category : Elektronenröhren & Valves Seller : ana4193(169, 100.0%) |