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53ku u54 cv378 gz37 tube matched pair Cossor tubes curved base black plate

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Original price was: $1,188.00.Current price is: $712.80.

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Model : cv378
Type : Rectifier Tubes
Modified Item : No
Country/Region of Manufacture : United Kingdom
Brand : Cossor
MPN : cv378
Custom Bundle : No

53ku u54 cv378 gz37 tube rectifier tubes black plate & black curved base valve British valves pair 2 tubes cv378 Cossor KB/K arrow AM ref 10CV/378 British military specifications Army tubes highest quality tested on Tube tester TV7D/U = 48 & 48 ; 49 & 49 (reference good at 40& 40) tested also on tube tester Funke W19S test results = 75mA & 75mA same emission for both tubes (reference good at 55mA & 55mA) tested strong & balanced emission & matched pair curved black base fat shape old production 1950’s black plate with own carton box 2 tubes = two valves = 2 pieces base is fixed / glued same as per pictures: there is no return for such reason, see pictures box 179

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