For sale is one ECC81 12AT7 Telefunken vacuum tube in white box
Tube tests very good at 86/82 no gas no shorts (minimum good is 50/50) on my TV7D/U tube tester.
Manufactured by Telefunken in Berlin Germany
Has date code of BHL24 March 1963
White graphics printed on tube are good and readable
Diamond on the bottom, wing shape gray plates