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(!!!) (Best Value Single 1958) 12AU7=ECC82 Brimar made for Arkay England ribbed plates 1958 (8.2/10.8ma)
(!!!) (Best Value Single) 12AU7 Telefunken Germany <> bottom smooth plates used/tests like new 1960's (9.6ma/9.5ma)
(!!!) (Best Value Single) CV4003=12AU7 RFT East Germany NOS 1974 (12.2/12.8ma)
(!!!) (Best Value Single) ECC82=12AU7 Philips Holland branded SONOTONE NOS 1960 (10.0/9.2ma)
(!!!) (Best Value) 12AU7=ECC82 Daystrom Mullard UK ribbed plates like new 1963 (11.6/10.2ma) (162 series) (smooth presentattion)
(!!!) (Best Value) 12AU7=ECC82 Daystrom Mullard UK ribbed plates like new 1963 (9.0/10.2ma) (162 series) (smooth presentattion)
(!!!) (Good Value Pair) 12AU7A RCA clear top used/good 1960's (7.5/9.6ma and 7.5/9.2ma)
(!!!) (Good Value Single) 12AU7 EICO Holland used/good 1961 (8.0/9.6ma)
(!!!) (Good Value Single) 12AU7 Philips Australia NOS 1970 era (9.6/8.8ma) (same internals as Holland made)
(!!!) (Recommended Single 1957) 12AU7A Sylvania gray pinched plates "D" getter halo NOS 1957 (9.2/10.2ma)
(!!!) (Recommended Single) 12AU7A RCA clear top NOS 1960 era (9.6/9.8ma) (Same Gm)
(!!!) (Recommended Single) 12AU7A RCA clear top NOS 1969 (8.4/8.2ma)
(!!!) (Single) 12AU7=ECC82 Mullard BVA UK ribbed plates used/good 1970 Mitcham plant (8.4/8.2ma) (sweet sound)
(!!!) (Single) 12AU7=ECC82 Telefunken Germany <> bottom ribbed plates like new 1959 (9.6ma/11.8ma)
(!!!) (Single) 12AU7=ECC82 Telefunken Germany <> bottom smooth plates NOS 1968 (14.5ma/8.6ma)
(!!!) (Single) 12AU7A RCA clear top NOS 1968 (8/11ma)
(!!!) (Smooth Single) ECC82=12AU7 Ediswan Valve by Brimar England NOS ribbed plates large "O" getter halo 1962 (11.4/11.8ma)
(!!) (1 Pair) CV4069=13D3 Brimar UK NOS 1969 era with flying leads (no pins) (matched on TV-7D/U)
(!!) (Best Single) 12AU7A Tungsol tall ribbed plates NOS "O" getter halo 1960 era (9.8/9.6ma)
(!!) (Best Value Single 1953) 12AU7 Sylvania black plates "D" getter used/strong 1953 no printing (9.6/11.8ma)
