Nice 1940's vintage genuine British made AR8 HL23DD CV1306 tubes, mostly made by GEC, various UK Ministry of Defence/Air Ministry markings and broad-arrow (crown property) mark. These tubes use a special British Mazda Octal socket, available from us, please ask or see Octal-Other Tube Socket listings.
This item is shipped from Britain, in North America or Asia please allow 2 to 3 weeks for delivery.
For more information, see data sheet : http://www.tubezone.co.uk/pdf/a2134.pdf
Tubes are tested with an AVO tester and test within normal factory tolerance for plate current and transconductance, and are tested for leakage and shorts.