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(!) 12BH7A Toshiba rebranded "Bell and Howell Schools" like new 1960's (9/10.4ma)
(!) 12SN7GTA GE NOS 1958 (9.0/7.5ma) (same Gm)
(!) 1L6 Sylvania NOS 1956 (112/60)
(!) 1L6 Sylvania NOS 1957 smeared printing (20/16)
(!) 5751 GE gray plates double mica used/good 1970's no printing (2.0/2.3ma)
(!) 5751 GE gray plates double mica used/very good 1960's no printing (2.2/2.1ma) (strong Gm)
(!) 5U4G Sylvania rebranded Motorola used/good 1951 (48/40 and 52/40)
(!) 5U4G Windsor by Sylvania used/good 1947 faded getter (54/40 and 56/40)
(!) 6080 RCA gray plates NOS 1974 (74ma/105ma)
(!) 6189=12AU7A GE NOS 1975 (9.6/10ma) 1-2% section balance
(!) 6189=12AU7WA GE black plates "U" getter NOS 1950's rebranded Dumont 1978 (9.8/10.1ma) 1-2% section balance
(!) 6BQ5 GE used/good 1960's (35.5ma)
(!) 6DE7 GE Admiral black plates NOS 1965 (4.5/27ma) (Woo Audio)
(!) 6F6G Sylvania coated glass used/good 1940's (36.8ma)
(!) 6V6GTY GE Canada brown base black plate NOS 1970 (42.5ma) (similar to RCA black plate)
(!) 6V6GTY GE Canada brown base black plate tests like new 1961 (41ma) (similar to RCA 6V6GTA black plate)
(!) 6Y6G=VT-168A Raytheon coated glass NOS 1944 (60ma)
(!) 6ZY5G Philco NOS 1940's (50/40 and 54/40)
(!) 75=VT-75 Sylvania Zenith used/good 1930's (27/19)
(!) 80 GE Uruguay GT-shape NOS 1950's tilted glass (58/40 and 60/40)
