(!!!!!) (BEST OVERALL SINGLE) CV378=GZ37 Mullard "D" getter NOS 1955 faded printing (56/40 and 56/40) (1st version made with skinny bottle)
(!!!!!) (Best Single) 6DJ8=ECC88 Philips Miniwatt Holland "O" getter 1965 (21/23ma) (Highest mA and Gm)
(!!!!!) (BEST SINGLE) 6X4 SER = LM Ericsson Sweden "D" getter NOS 1950's (56/40 and 56/40) 1% balance
(!!!!!) (BEST SINGLE) 6X4 SER = LM Ericsson Sweden "D" getter NOS 1950's (57/40 and 58/40)
(!!!!!) (Best Tungsol Pair) 5881 Tungsol 1960-1967 like new and used - same build (66.2ma and 66.5ma)
(!!!!!) (Best Value Single) 5Z4G Tungsram UK black plates NOS 1950's smaller getter (56/40 and 56/40) (G9 Audio preamp) (Best sub for Russian 5Ц4С / 5U4C Russian)
(!!!!!) (Best Value Single) CV378=GZ37 Mullard "D" getter NOS 1955 one plate is discolored (57/40 and 57/40) (1st version made with skinny bottle)
(!!!!!) (Good Value Pair) 12BH7A Sylvania gray pinched plates NOS and used 1970 era (7.6/8.0.4ma and 7/7ma)
(!!!!!) (Good Value Pair) 6350 Sylvania black plates NOS 1950's "D=SQUARE" getter rebranded United (8.8/9.2ma and 9/10.2ma)
(!!!!!) (Recommended Pair) 6350 Sylvania rebranded United black ribbed plates NOS large "U" getter halo 1955-1957 (10.8/12.4ma and 10.8/11.5ma)
(!!!!!) (Recommended Pair) 6BK7B RCA black plates NOS 1960's (9.5/10ma and 9.8/10.6ma)
(!!!!!) (Recommended Pair) 6C4C=6B4G Russian NOS 1955 and 1968 (91ma and 96ma) (these are some of the best sounding 6B4G ever made)
(!!!!!) (Recommended Single) 421A Western Electric NOS 1969 (85ma and 75ma) (rare)
(!!!!!) (Recommended Single) 421A=5998 Western Electric NOS 1984 (81ma and 94ma)
(!!!!!) (Recommended Single) 6X4 SER = LM Ericsson Sweden "D" getter NOS 1950's (56/40 and 60/40)
(!!!!) (2nd Best Single) JAN-5998 Tungsol black plates top and side getter NOS 1966 (88ma and 101ma)
(!!!!) (2nd Best Single) JAN-5998 Tungsol black plates top and side getter NOS 1966 (91ma and 103ma)
(!!!!) (Best 5 Star Single) 5751 GE 5-Star gray plates NOS 1964 (2.1/2.5ma)
(!!!!) (Best 5 Star Single) 5751 GE 5-Star gray plates NOS 1964 (2.8/3.1ma)
(!!!!) (Best 6094 Quad) JAN-CEA-6094 Bendix gold pins NOS 1957 (55/57/57/58ma)