(!!!!) (Best Overall Pair) 5U4GB GE NOS 1977 (60-61/40 and 60-61/40)
(!!!!) (BEST OVERALL PAIR) 5U4GB Raytheon NOS "O" getters 1962 (59-60/40 and 59-60/40) 1% matched
(!!!!) (BEST OVERALL PAIR) 5U4GB RCA NOS 1973 (60-60/40 and 60-60/40) 1% matched
(!!!!) (Best Overall Pair) 5Y3GT Philips Holland NOS 1960's (62-63/40 and 62-64/40)
(!!!!) (BEST OVERALL QUAD) 5U4GB Raytheon NOS "O" getters 1962 1-2% matched
(!!!!) (Best Overall Quad) 6106 Bendix 1950's rebranded 5Y3WGTA Heintz & Kaufman NOS (matched quad) 1-2% matched
(!!!!) (Best Overall Quad) 6106 Bendix 1950's rebranded 5Y3WGTA Heintz & Kaufman NOS (matched quad) 1-3% matched
(!!!!) (Best Pair #1) 6CA4 RFT East Germany (Funkwerk) NOS 1970's (50/40 and 50/40 x 2 tubes) 1% matched
(!!!!) (Best Pair #1) 6CA4 RFT East Germany (Funkwerk) NOS 1970's (50/40 and 50/40 x 2 tubes) 1% matched (Copy)
(!!!!) (Best Pair #2) 6CA4 RFT East Germany (Funkwerk) NOS 1970's (49/40 and 50/40 x 2 tubes) 1% matched
(!!!!) (Best Pair for the money) 5Y3GT Philips Holland NOS 1960's (60-66/40 and 60-66/40)
(!!!!) (BEST PAIR) 5U4GB Raytheon NOS "O" getters 1962 (59-62/40 and 60-62/40)
(!!!!) (Best Pair) 5V4GA GE branded Raytheon NOS 1960's (60-60/40 and 60-60/40)
(!!!!) (Best Pair) 5V4GA GE branded Raytheon NOS 1960's (60-60/40 and 60-61/40)
(!!!!) (Best Pair) 5V4GA GE NOS (60-60/40 and 60-60/40)
(!!!!) (Best Pair) 5Y3GT Philips Holland NOS 1960's (60-64/40 and 60-65/40)
(!!!!) (Best Pair) CEA-5993 Bendix NOS 1950's (52/40 x 4 sections)
(!!!!) (BEST PRICE) 6X4 SER = LM Ericsson Sweden "D" getter NOS 1950's (54/40 and 55/40)
(!!!!) (Best RCA Pair) 5V4GA RCA gray plates NOS 1968-1972 (58-58/40 and 59-59/40)
(!!!!) (Best Single 1975) GZ34 Mullard UK NOS 1975 (59/40 and 60/40)
