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
