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(!!!!) (Best Single) 83 RCA Radiotron NOS 1940's (60-59/40)
(!!!!) (Recommended Pair) JAN-CRC-30 RCA NOS 1940's same build (2.9ma and 3.0ma)
(!!!) (BEST SINGLE) JAN-CRP-6F8G=VT-99 Raytheon parallel black plates 1944 (8ma and 8ma)
(!!!) (Recommended Pair) 30 RCA Cunningham engraved base 1930's low hours/test like new (3.3ma and 3.4ma)
(!!!) (Recommended Single) ER-230=30 Raytheon 1930's used/like new (4.1ma and Gm=800)
(!!!) (Single) 83 RCA NOS 1956 small amount of graphite flaked off plate (66/40 and 65/40)
(!!) (Best Value Pair) 30 Sylvania NOS branded DELCO NOS 1947 (3.3ma and 2.8ma)
(!!) (Single) 2A3 Sylvania black plates connected in middle like new 1940's (104ma)
(!!) (Single) 6F8G Philco by Sylvania parallel plates used/good 1940's (10.2ma and 7.2ma) (close Gm)
(!) (Best Single) 5Z3G Hytron NOS 1947 (51/40 and 51/40)
(Best Value) 5V4G RCA black plates used/good 1948 (51/40 and 54/40)
(Best Value) 5V4G RCA black plates used/tests like new 1958 (60/40 and 60/40)
(Best Value) 5V4G RCA Radiotron black plates used/tests like new 1944-1945 (58/40 and 58/40)
(sold out) 349A Western Electric
25L6GT RCA NOS 1963 (98/60)
25L6GT Sylvania NOS 1947 (82/60)
25L6GT Tungsol NOS 1940's (88/60)
283A WE meshplate used/50% output 1947
6F8G Raytheon staggered black ribbed plates used/strong 1940's (7.6ma and 8.8ma)
6P5GT Sylvania NOS 1947 (5.0ma Gm=1400)
