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(!) (Single) 5963=12AU7 GE NOS 1960's (11.6/11.8ma)
(!!) (1 Pair) CV4069=13D3 Brimar UK NOS 1969 era with flying leads (no pins) (matched on TV-7D/U)
(!!!!) (SINGLE) 12AU7A GE NOS 1963 copper grid posts (8.9/10.2ma)
(!!) (Best Single) USN-CHS-5963=12AU7 Sylvania NOS "D" getter 1959 (10.6/11.8ma)
(!!) (Best Value Pair) 12AU7A RCA MEXICO NOS "TOP GETTER" original boxes 1970's (9.2/10ma and 8.7/9.4ma)
(!!) (Good Value Single) 12AU7 Amperex "Hewlett Packard" Holland "o" getter halo used/good 1968 (8.2/8.4ma)
(!!) (Good Value Single) ECC82=12AU7 Philips Holland used/good 1972 dimpled disc getter (8.4/8.8ma)
(!!) (slightly microphonic) 12AU7A Raytheon black ribbed plates "D" getter halo black coated glass 1951 (8.8/9.6ma)
5963 RCA black ribbed plates" and D getter halo NOS 1957 (sold out - read review)
(!) 6189=12AU7A GE NOS 1975 (9.6/10ma) 1-2% section balance
(!!) 12AU7A RCA CANADA NOS "D" getter halo 1950's tip is chipped (10.0/10.4ma)
(!!) 12AU7A RCA clear top used/good 1960's (7.4/8.6ma)
(!!) 12AU7A RCA clear top used/good 1964 (8.2/8.6ma)
(!!) 5963=12AU7 RCA NOS 1963 (9.2/9.6ma)
(!!) (Single) JRC-12AU7 RCA NOS long gray plates mid-1950's "D" getter (9/11.6ma)
(!) (Slightly microphonic) JG-5814A GE NOS triple mica "U" getter halo 1956 (10.2/10.4ma) 1-2% section balance (high Ma and Gm)
(!) (slightly microphonic single) 12AU7 Hitachi JAPAN branded IEC Mullard NOS ribbed plates 1968 (9.4/11ma)
(!!) (Good Value Single) ECC82=12AU7 Philips Miniwatt Holland used/good 1965 (7.8/10ma)
(!!) (Best Value Single 1953) 12AU7 Sylvania black plates "D" getter used/strong 1953 no printing (9.6/11.8ma)
(!) 12AU7 Tungsol gray ribbed plates NOS square or "D" getter halo 1954 in white box (8.2/8.6ma)
