Very rare early Marconi MHL4 HL4 CV1038 VT91 BIG GLOBE TUBE/VALVE, AVO tested Strong, possibly unused.  100 year old valve in superb condition.

Tested on a recently calibrated AVO VCM 160 with the following results;       

                         IA      GM
Valve 1:   A1   10.5    2.0              

AVO NOS Specs:  IA = 8.0 GM = 2.5   

No leaks or shorts, solid bases, shiny pins. eBay seller for over 20 years, buy with confidence - see feedback.  Valve will be shipped next day, carefully packaged, tracked and insured.  Please drop a note with any questions.

Shipping happily combined on multiple items.

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