(!!) (#1 7199 RCA SINGLE) 7199 RCA Black Plates NOS around 1960
(!!) (#1 7199 Sylvania Single) 7199 Sylvania NOS 1960
(!!) (#1 7199 Sylvania Single) 7199 Sylvania NOS 1970
(!!) (#2 7199 RCA SINGLE) 7199 RCA Black Plates NOS around 1960
(!) (#1 Best Pair) 7199 Sylvania NOS 1960's -1970 same build
(!) (#1C 7199 SINGLE) 7199 RCA Black Plates NOS around 1960
(!) (#1D 7199 SINGLE) 7199 RCA Black Plates NOS around 1960
(!) (#3 Best Single) 7199 Sylvania NOS 1960's
(!) (#4 Best Single) 7199 Sylvania NOS 1960's
(!) (1 pair) JAN-7044 GE NOS 1974 (1 tube is slightly microphonic) (high Ma and Gm) (recommended for driver or output stage)
(slightly microphonic) 7044 RCA NOS 1969 (39/42ma)
(slightly microphonic) JAN-7044 GE NOS 1974 (38.5/40.5ma)
7199 RCA black plates rebranded Westingouse NOS 1970's
7199 RCA Black Plates used/good 1970
7199 RCA Black Plates used/good 1970 (best used single)
