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(!!!) (Single) 5814A GE "5 STAR" with "O" getter halo 1960's (10.8/11.6ma)
(!!!) (Single) 5814A=12AU7 GE NOS 1960's rebranded 5814WA Penta Labs 1993 (8.8/8.4ma)
(!!!) (Single) 5814A=12AU7 GE NOS 1960's rebranded 5814WA Penta Labs 1993 (9.6/8.8ma)
(!!!) (Single) 5814A=12AU7 GE NOS 1960's rebranded 5814WA Penta Labs 1993 (9.8/11.2ma)
(!!!) (Single) JAN-6189=12AU7WA Sylvania NOS 1968 (8.2/9.4ma)
(!!!) (Single) JAN-6189=12AU7WA Sylvania NOS 1978 (9.2/8.8ma) (same Gm)
(!!!) (slightly microphonic) 12AU7A Westinghouse black plates "D" getter halo 1964 NOS (9.6/10.6ma) (similar to RCA black plates)
(!!!) 12AU7 RCA tall gray plates "D" getter used/good 1953 (9.2/9.8ma)
(!!!) 12AU7A GE "U" getter like new 1959 (10.8/10.2ma)
(!!!) 12AU7A GE "U" getter low hours/tests like new 1957 (10.0/8.8ma)
(!!!) 12AU7WA Mullard branded Chelmer Valve used/good 1961 (7.7/8.8ma)
(!!!) JHS-6189=12AU7WA Sylvania NOS 1965 in white box (10/9ma)
(!!!) JHS-6189=12AU7WA Sylvania NOS 1966 in white box (9.5/9.6ma)
(!!) (#1 12AU7 Raytheon from 1954) 12AU7 Raytheon gray ribbed plates "D" getter halo NOS 1954 (10.6/11.2ma)
(!!) (#1 12AU7 Raytheon from 1956) 12AU7 Raytheon gray ribbed plates super large "U" getter halo NOS 1956 (10.4/10.8ma) (High Ma and Gm)
(!!) (#1 12AU7A Raytheon 1960's single) 12AU7A Raytheon Uniline gray ribbed plates "O" getter NOS 1960's (8.2/11ma)
(!!) (1 Pair) CV4069=13D3 Brimar UK NOS 1969 era with flying leads (no pins) (matched on TV-7D/U)
(!!) (BEST GE Pair) 5963=12AU7 GE branded RCA NOS ribbed plates 1978 (13.0/11.4ma and 12.6/11.4ma)
(!!) (Best RCA Single) JRC-6189=12AU7WA RCA black plates "D" getter NOS 1957 (8.6/9.0ma)
(!!) (Best Single) 12AU7A Tungsol tall ribbed plates NOS "O" getter halo 1960 era (9.8/9.6ma)
