(!!!) (Good Value Single) ECC81=12AT7 Mullard old logo made in Hyperlec Brive France used/good (8.4/9.8ma)
(!!) (Good Value Single) 12AT7 Mullard made in Hyperlec Brive France NOS 1970's (10.2/10.8ma)
(!!) (GOOD VALUE) 12AT7=ECC81 Mullard made in Hyperlec Brive France NOS 1970's (8.2/11.4ma)
(!!) (Recommended Single) 5814A=12AU7 Hyperlec Brive France (Holland clone) NOS 1970's rebranded National (10.0/11.6ma)
(!!) (Recommended Single) 5814A=12AU7 Hyperlec Brive France (Holland clone) NOS 1970's rebranded National (11.8/12.2ma)
(!) (BEST VALUE) 12AT7=ECC81 Mullard made in Hyperlec Brive France branded ULTRON NOS 1970's (7.4/7.8ma)
