ECC81-12AT7-CV4024 - tubesandrecords.com NOS tubes for you!
Brimar 12at7 Vacuum Tube Replacement Ecc81/6201/cv4024/m8162/b309 Provide Pairing For Tube Amplifier And Sound Amplifier - Home Theater Amplifiers - AliExpress
M8162 CV4024 12AT7WA MULLARD QDD NOS VALVE TUBE - Langrex
CV4024=12AT7WA Brimar NOS square black plates 1976 (7.6/8.2ma)
BRIMAR CV4033 - Rare 1958 - Mil Black Plate, 3-MICA Halo GT. - STC Roc – Pulse Tubes Store