Brimar, Matched Pair CV4003/12au7 Small Signal Tubes - Exceptional,BRIMAR CV4003 ECC82 12AU7 - MINT NOS NIB Early 1960s Tall Plate Square Getter BVA logo - Military Grade STC Prod - ENGLAND (Singles/M. Pairs),NOS Tube Store: BRIMAR CV4003 / 12AU7 / ECC82,BRIMAR CV4034 - MINT NOS NIB 1970 Mil Long Plate Prem. Grade Long Life,Brimar CV4003 / 12AU7 / 6189 original madi in UK