MULLARD BLACKBURN EZ81 6CA4 TUBE as pictured, in very good condition (tested on my tube tester where NOS tube normal ranged 105-110, min-good=65, max-good=120, tested tube = 107 /106 respectively, no short, no leak) since this item is highly “MISHANDLING SENSITIVE” it is intending for professional (whom who know it well) and this selling is final (no return or refund) Please buy or bid accordingly. Thanks for looking.