(!!!) (#1 12AT7 Best Value Pair) ECC81=12AT7 Mullard NOS old logo made in Hyperlec Brive France in white boxes 1970's 1-2% matching
(!!) (#1 12AT7 VALUE) 12AT7=ECC81 Mullard made in Hyperlec Brive France NOS 1970's (13.6/15.4ma)
(!!) (#1 12AT7 VALUE) 12AT7=ECC81 Mullard made in Hyperlec Brive France NOS 1970's (8.0/9.0ma)
(!!) (#1 12AT7 VALUE) CV4024=12AT7=ECC81 Mullard made in Hyperlec Brive France NOS 1970's (8.5/10.4ma)
(!!) (#1 EL84 Best Value Pair) EL84 Siemens made by Hyperlec Brive Correza France NOS 1974 (49.2ma and 51.5ma) (matched on Amplitrex)
(!!) (#2 12AT7 Value Pair) ECC81=12AT7 Mullard NOS old logo made in Hyperlec Brive France in white boxes 1970's
(!!) (#2 12AT7 VALUE) 12AT7=ECC81 Mullard made in Hyperlec Brive France low hours/like new 1970's (9.6/10.4ma)
(!!) (#3 12AT7 Value Pair) ECC81=12AT7 Mullard NOS old logo made in Hyperlec Brive France in white boxes 1970's
(!!) (#4 12AT7 Value Pair) ECC81=12AT7 Mullard NOS old logo made in Hyperlec Brive France in white boxes 1970's
