(!!!) (Recommended GE Pair) JAN-CG-6Y6GT GE NOS 1964 (51ma and 55ma)
(!!) (#3 6Y6GA Sylvania Pair) 6Y6GA Sylvania NOS 1956-1966 same internal build getter halos different shapes (48.5ma and 49ma)
(!) 6Y6G=VT-168A Raytheon coated glass NOS 1944 (60ma)
6Y6G Arcturus by Tungsol coated glass used/good/70% 1940's (43ma) tested on amplitrex
6Y6G GE 1943 used/good black plate, double filaments, crack in base (56ma) tested on amplitrex
6Y6G GE used/good/75% 1958 (46ma) tested on amplitrex (high Gm)
6Y6G National Union coated glass used/good/75% 1952 (46ma) tested on amplitrex
6Y6G RCA clear glass gray plate NOS 1959 (52ma) tested on amplitrex
6Y6G Sylvania rebranded Raytheon coated glass used 1953 (45ma) tested on amplitrex
6Y6G Westinghouse coated glass NOS 1940's (50ma) (tested on amplitrex)
6Y6GT GE NOS 1960's (85ma)
6Y6GT RCA NOS 1964 (66ma)
JAN-CRC-6Y6G=VT-168A RCA coated glass used/good/70% early 1940's (42.5ma) tested on amplitrex
