(!!!!!) (BEST VALUE PAIR) 6L6GC RCA Black Plate used/good 1970-1975 (66.5ma and 67.5ma) (Gm like new)
(!!!!!) (Recommended Pair) 6L6GC RCA Black Plate used/good 1962-1964 (59.5ma and 60.8ma)
(!!!!) (Best Pair) 56 Sylvania black plate NOS 1940's branded Western Electronics 1940's (6.4ma and 6.5ma) (Highest Ma and Gm)
(!!!!) (Best RCA Single) 6L6GC Seeburg by RCA black plate tests like new 1965 (69ma)
(!!!!) (Good Value Single) 6L6GC Seeburg by RCA black plate used/good 1961 (66ma)
(!!!!) (Recommended Pair) 6L6GC RCA and RCA Simplex black plate used/good 1960's (61ma and 59ma) (same Gm)
(!!!!) (Recommended Pair) 6V6GT RCA black plate coated glass like new 1940's and NOS 1954 (49ma and 46ma)
(!!!!) (Recommended Pair) 807 RCA black plate NOS and used/like new 1956-1957 same build large getters (61ma and 63.5ma)
(!!!!) (Recommended Single) 6L6GC RCA black plates branded Westinghouse like new double "D" getters 1960 era (72ma)
(!!!!) 56 Arcturus Blue Balloon engraved base tests like new 1930's (5.0ma)
(!!!) (Best 12AT7WC Single) JAN-12AT7WC Sylvania black plates NOS 1978 (9/10ma)
(!!!) (Best Value Black Plate single) 6L6GC RCA Conn black plate used/good 1962 (67ma) (Gm like new)
(!!!) (Good Value Single) 6L6GC RCA black plate NOS 1965 broken center guide pin (76.2ma)
(!!!) (PAIR) 6SL7GT Sylvania round gray plates NOS 1952 (2.1/2.4ma and 2.3/2.5ma) (same Gm)
(!!!) (Recommended Pair) 6005W Sylvania JAN black plate clear glass NOS 1971 (45.8ma and 46.6ma)
(!!!) (Recommended Pair) 6005W Sylvania JAN black plate clear glass NOS 1971-1972 (41ma and 41.2ma) 1% matched
(!!!) (Recommended Pair) 6AQ5A Sylvania black plate NOS 1970's (50.5ma and 52ma)
(!!!) (Single) 6J5G Sylvania engraved base black oval plate used/very good 1930's (8.0ma)
(!!!) 6SL7GT Sylvania round gray plates like new 1951 (3.7/3.6ma) (Highest mA and Gm)
(!!) (#3 56 Sylvania Pair) 56 Sylvania black plate NOS 1940's branded Western Electronics 1940's one tube has slightly tilted glass (5.2ma and 5.5ma)
