6SK7 Ken Rad NOS 1943 (9.6ma)
6SK7GT Raytheon used/good/70% 1940's (6.6ma)
6SK7GT Sylvania Coronado used/good 1940's (7.2ma)
6SK7GT Sylvania FM Co. used/good 1940's (8.2ma)
6SK7GT Sylvania used/good 1940's (7.3ma)
6SN7GTB Raytheon black plates like new 1960 era (7.3/7.4ma) 1-3% section balance
6SN7GTB RCA used good 1960's (6.4/8.2ma)
6SQ7 metal used/good (3 in stock)
6SQ7 RCA NOS 1950 (1.3ma and Gm=1600)
6SQ7 RCA NOS 1950 era (6 in stock) (special price)
6SQ7 RCA NOS 1953 (1.0ma Gm=1200)
6SQ7 RCA NOS 1953 (1.0ma Gm=1400)
6SQ7GT Fonoco by Sylvania used/strong 1951 (1.1ma and Gm=1100)
6SQ7GT Sylvania used/good 1951 (Gm=800)
6SR7 US Brands metal can NOS (15 in stock)
6SV7 GE NOS (10 in stock)
6SV7 Raytheon NOS
6T10 US Brands NOS (8 in stock)
6T7G Philco NOS (2 in stock)
6T8 Sylvania NOS 1950's (8 in stock)
