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3Q5GT=VT-221 Ken Rad used/tests like new 1940's (106/60)
6AH4GT RCA NOS 1960's (17.5ma)
(!!!!) (BEST PAIR) 6BL7GTA GE branded RCA/Raytheon"D" getter halo NOS 1950's (37.0/38.2ma and 35.5/42.2ma) (close Gm matching)
(!!!) (Single) 6080 GE NOS 1978 (78/115ma)
56 Made in Holland NOS 1940's (5.1ma)
VT-138=1629 RCA NOS 1940's 1/4" tilt bright eye
6AR6 Raytheon black plate used/good 1952 (67ma)
(!!!) (Single) 6080 GE NOS 1974 (70/106ma)
12B4A RCA NOS 1960's (31.5ma)
(!!) 5Z3G National Union burgundy base NOS "D" getter 1951 (56/40 and 59/40)
3V4 GE Motorola used/strong 1960 era (92/60)
(!!!) (Best Pair #1) 6W4GT Westinghouse Canada black plate "D" getter halo NOS 1959 (53-53/40)
(!!!) (Best Pair #2) 6W4GT Westinghouse Canada black plate "D" getter halo NOS 1959 (52-52/40)
(!!) (Single) JAN-5670W GE used/good 1970's (6.8/6.0ma)
(!!!) USN-CRC-1629=VT-138 RCA NOS 1940 (bright eye) (oldest single)
(!!!!!) (Best Single) 45 Raytheon NOS 1940's (38ma) (Highest Ma and Gm)
JAN-CRC-6AF6G RCA tuning eye NOS 1955
56 no name NOS 1950's (5.7ma)
6A3 RCA Victor NOS 1948-1949 (62ma)
6X4WA GE black plates rebranded National NOS (55/40 and 56/40)