Nice new old stock,Brimar British made 12AX7 CV4004 ECC83 tubes in Brimar or British government boxes. These all have the single flange CV4004 type plate (anode) and halo getter, some of these are labelled 12AX7 CV4004 others just 12AX7 they are all the same type of construction and have the single flange plate..
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. Price is per tube. Limited quantities available of this item.
This item is shipped from Britain, in North America or Asia please allow 2 to 3 weeks for delivery.