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(!) (SINGLE) 5692 RCA RED BASE rebranded GL-5692 GE used/good 1949 (8.2/7.6ma)
5U4GB RCA Motorola used/good 1962 (54/40 and 55/40)
(!!!) (Single) 6FQ7 RCA clear top NOS 1966 (6/7ma) (STAX, MARANTZ, CONRAD JOHNSON) (Copy)
6HR6 RCA branded GM Radio NOS 1960's (115/60 and 13ma)
(!!) 6BL7GTA RCA low hours/like new 1961 (42.2ma/43.6ma) 1-2% section balance
(!!!!) (Best Single #4) 6SN7GTB RCA NOS 1964 (9.2/8.0ma)
(!!) (SINGLE) 5687 Tungsol rebranded IBM bronze plates "U" getter used/very good late 1950's (32.5/39ma)
(!!!!) (Good Value Pair) 6V6GTA RCA used/good 1962 and 1970's (30ma and 31.5ma)
25AC5GT RCA NOS 1940's (66/38)
(!!!) (Recommended Single) 12AU7A RCA clear top NOS 1960's (10.2/11.6ma)
(!) (Best Value Single) 6FQ7 GE branded RCA NOS 1966 (7.6/7.2ma)
(!!!!) (Best Overall Pair) 12AX7A RCA gray ribbed plates NOS 1974 same date codes (best tone) (1.3/1.2ma and 1.3/1.1ma) (Fender, McIntosh, Rogue Audio
6BG6G RCA NOS 1963 (63ma)
(!!!!) (Recommended Pair) 8417 Sylvania branded RCA NOS 1972-1973 (119.2ma and 123.7ma)
6LF6 RCA JAPAN branded Gt. Britain Big Bottle Euro style construction NOS 1970's (80ma)
6AU4GTA RCA coin-base NOS 1970's (91/60)
(!) 6L6Y RCA metal can (Y=brown bottom) NOS 1955 (78.8ma)
6HS6 RCA NOS 1960's (7.2ma)
(!!!) (Recommended SINGLE) 5R4GY RCA branded GE NOS 1952 (49/40 and 49/40)
(!!!!) (Best Single) 6SN7GTB RCA branded GE NOS 1970 (9.0/9.2ma)
