One (1) AZ1 Mullard rebranded Valvo Rare Cut Plates, used, tested, work OK. As is ...
This is genuine Mullard Blackburn AZ1, rare thick cup getter, cut plates, balanced and strong sections, good getter, pretty tight base. It's tested with 50V on plates and 4.4V on heaters and the results are, 93mA and 98mA, tested NOS!
Really nice tube with perfect test results, extremely good getter and lot of life left!
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