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
