BRIMAR CV4033 - MINT NOS NIB 1960 Mil Black Plate Prem. Grade Long Life ECC81/CV4024/12AT7 Halo Getter STC Prod ENGLAND Factory Tested (Plug&Play Ready to Use) - M. Pairs/Quads/Singles stand true for the Mjolnir

stand true for the Mjolnir 2

STC Date Codes are faint and painted on instead of etching in Brimar flying lead type

Tested and precision matched in house

Also we have potted this pencil thin tube in a High Elastance base making it even more immune to shock and vibrations

BRIMAR CV4033 - MINT NOS NIB 1960 Mil Black Plate Prem. Grade Long Life ECC81/CV4024/12AT7 Halo Getter STC Prod ENGLAND Factory Tested (Plug&Play Ready to Use) - M. Pairs/Quads/Singles stand true for the MjolnirBrand New MINT NOS NIB Rare 1960 BRIMAR CV4033 Black Plate with Copper Grid Post Military tubes. Factory tested and serialized*. CV4033 Flying Lead is a Premium Grade, High Reliability Long Life version of CV4024 ECC81 12AT7 valves (Click Here). CV4033 premium grade version of the 1960s Black Plate CV4024 6060 is one of the best from Brimar in the ECC81 types. STC Rochester Plant Date Codes. Made in England. *each tube came with 3 factory stickers