(!) (Recommended Single) 6N7GT Raytheon coated glass NOS 1940's (3.2/3.5ma)
5694 Raytheon (sold out)
6N7 RCA used/tests like new 1942 era (3.3/3.1ma)
6N7GT RCA branded Sylvania NOS 1950's (2.5/2.6ma)
6N7GT RCA NOS 1940's (2.5/3.1ma)
6N7GT RCA used/good 1940's (2.4/2.3ma)
