(!!) (Best Pair) 12SL7GT GE NOS 1969 (2.4/2.6ma and 2.6/2.7ma)
(!!) (BEST PAIR) 272A Western Electric NOS "meshplate" 1961 and 1969 (6.1ma and 6.4ma)
(!!) (Best Pair) 6AG7 RCA NOS 1960's (27ma and 27.5ma)
(!!) (Best Pair) 6BA7 Raytheon NOS large "D" getter mid-1950's (66/40 and 66/40)
(!!) (Best Pair) 6BH6 RCA NOS 1970 era (7.7ma and 8ma)
(!!) (2nd Best Pair) 6DR7 GE black plates NOS 1960's-1973 same build (1.6/1.7mA and 26/25mA)
(!!) (Best Pair) 6GK5=6FQ5A Hitachi Japan rebranded Raytheon and GE NOS 1970 era (9.6/10ma)
(!!) (Best Pair) 6J6A Tungsol NOS "D" getter 1961 (9.4/10.5ma and 9.0/11.4ma)
(!!!) (Recommended Pair) 713A Western Electric by Tungsol NOS 1942-1943 (6.6ma and 6.9ma) (713A = 717A with black base)
(!!) (2nd Best Pair) 7199 Sylvania NOS 1960's and 1985 same build (12.5ma/9.6ma and 12.3/10.2ma) 1-3% matched
UX-201-A RCA Radiotron Balloon tests like new 1930's (read review)
(!!) (Best Pinched Waist 1956) E80F=6084 Philips Miniwatt Holland NOS Rugged Reliable Long-Life "Pinched Waist" with "D" getter halo 1956 (3.1ma)
(!!) (BEST PRICE) 12AU6 US Brands NOS (10 tubes for $29.99)
(!!) (BEST PRICE) 6AC7 Mixed US Brands (4 tubes for $14.99)
(!!) (BEST PRICE) 6AC7W RCA used/good (4 tubes for $8.99)
(!!) (BEST PRICE) 6SR7 US Brands metal can NOS (4 tubes for $14.99)
(!!) (Good Value Pair) ECC85=6AQ8 RCA Japan by Hitachi 1970's (10/15ma and 10.4/14.4ma)
(!!!!) (BEST SINGLE) 12AU7A GE NOS 1963 copper grid posts (11.4/11.6ma) 1-2% section balance
(!!) (Best Single) 5920=E90CC Amperex PQ Holland 1968 (8.0/8.4ma)
(!!!!) (Best Overall Single) GB-5963=12AU7 Sylvania Gold Brand Gold Pins NOS 1960's (11.2/13.6ma)
