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(!!) (Best Pair) 6CA4 Tungsol branded RAD TEL NOS 1961 (52/40 and 52/40 x 2 tubes) 1% matched
(!!) (Best Pair) 6CW4 Sylvania NOS 1960's (120/60 and 120/60)
(!!) (Best Pair) 6CZ5 RCA black plate 1960's same build (49.5ma and 51ma)
(!!) (BEST PAIR) 6EU7 GE NOS 1970-1978 (46-47/32 and 47-47/32) 1-2% matched
(!!) (Best Pair) 6F8G Raytheon black parallel ribbed plates NOS 1940's (8.8/7.8ma and 7.4/7.6ma) (same Gm)
(!!) (Best Pair) 6GJ7=ECF801 Dumont Japan NOS 1970's (80-81/60 and 80-81/60) 1-2% matched
(!!) (Best Pair) 6GJ7=ECF801 GE USA NOS 1960's - 1970's (82-86/60 and 82-85/60)
(!!) (BEST PAIR) 6V6 GE metal can NOS 1976 (41.5ma and 42ma) 1-3% matched
(!!) (BEST PAIR) FAA-12AL5 Sylvania NOS 1965 (47-47/40 and 47-48/40)
(!!) (BEST PAIR) FAA-12AL5 Sylvania NOS 1965 (48-48/40 and 48-48/40)
(!!) (BEST PRICE) 6AC7 Mixed US Brands (4 tubes for $14.99)
(!!) (BEST PRICE) 6AC7W RCA used/good (4 tubes for $8.99)
(!!) (Best Quad) 6CL6 RCA FAA NOS 1963 (35.5, 35.6, 36.2, 37.6ma)
(!!) (Best RCA Pair) 6Y6GA RCA clear top black plate 1965 (67.5ma and 68ma)
(!!) (Best RCA Single) JRC-6189=12AU7WA RCA black plates "D" getter NOS 1957 (8.6/9.0ma)
(!!) (Best Single #2) 5V4G RCA NOS 1953 some vertical scratches on base (59/40 and 61/40)
(!!) (Best Single) 13EM7 RCA coin-base black plates NOS 1970's (2.7/47.2ma)
(!!) (Best Single) 5AS4A RCA NOS 1964 slightly tilted glass (56/40 and 56/40)
(!!) (Best Single) 5Y3GT Tungsol NOS 1956 (60/40 and 56/40)
(!!) (Best Single) 6080WA RCA NOS 1975 (95ma/114ma)
