(!!!!) (Best Pair) 7199 Sylvania branded LINDAL NOS 1979 closely matched
(!!!!) (BEST RCA PAIR) 7199 RCA black plates NOS 1960's, 1 tube branded Tungsol, same build
(!!!) (Best RCA Single) 7199 RCA black plates NOS 1960's (14.2ma pentode /13.6ma triode)
(!!!) (Recommended RCA Single) 7199 RCA black plates NOS 1960's (10.6ma pentode / 6ma triode)
(!!!) 7199 RCA Black Plates NOS around 1960 (9ma pentode, 13ma triode)
(!!) (Best Overall Single) 7199 Sylvania NOS 1960's (15.2ma pentode/10.6ma triode) (High Ma and Gm)
(!!) (Best Sylvania Single) 7199 Sylvania NOS 1960's (11.0ma pentode/9.2ma triode)
(!!) (Recommended RCA) 7199 RCA black plates rebranded Westingouse NOS 1970's (13ma pentode, 7ma triode)
(!) (2nd Best Sylvania Single) 7199 Sylvania NOS 1960's (14.2ma pentode, 5.6ma triode)
(!) (Best Value) 7199 Sylvania NOS 1960's (9.2ma pentode / 8.6ma triode)
7199 RCA Black Plates used/good 1970 (12ma pentode, 5.2ma triode)
7199 RCA Black Plates used/good 1970 (18ma pentode, 5.2ma triode)
