(!!!!!) (#1 6V6G QUAD) 6V6G Haltron England NOS gray coated glass 1950's (46.2/46.5/47.0/47.8ma)
(!!!!!) (#1 6V6G QUAD) 6V6G Haltron England NOS gray coated glass 1950's (46.8/47.5/48.0/48.8ma)
(!!!!!) (#1A 6V6GT National Union Quad 1950 - Best Quad) 6V6GT National Union coated glass NOS 1950 (45.4/45.5/45.5/46ma)
(!!!!!) (#2 6V6GT SYLVANIA QUAD 1940's) 6V6GT Sylvania green leaf coated glass NOS 1940's in white boxes (40.5/41.5/42/42.2ma)
(!!!!) (#1 6V6G PAIR) 6V6G Haltron by GEC UK NOS coated glass NOS 1950's original boxes (44.5ma and 45.5ma)
(!!!!) (#1 6V6G PAIR- Best Sound) 6V6G Haltron UK NOS coated glass NOS 1950's original boxes (49.2ma and 50.2ma) (matched on Amplitrex)
(!!!!) (#1 6V6G QUAD) 6V6G Haltron England by GEC (MO VALVE) NOS coated glass 1950's (38, 38.6, 39, 40ma) (matched on Amplitrex)
(!!!!) (#1A 6V6GT National Union Pair 1950) 6V6GT National Union coated glass NOS 1950 (43.8ma and 44.0ma) 1% matched
(!!!!) (#3 6V6G PAIR) 6V6G Haltron by GEC UK NOS coated glass NOS 1950's original boxes (37ma and 38ma) (matched on Amplitrex)
(!!!) (#1 6V6GT European Pair) CV511=6V6GT Philips Miniwatt Stockholm, Sweden NOS 1954 (43.5ma and 46ma) (Same Gm for both tubes)
(!!!) (#1 6V6GT National Union Pair 1950) 6V6GT National Union coated glass NOS 1950 (43.5ma and 44.2ma)
(!!!) (#1 6V6GT National Union Pair 1950) 6V6GT National Union coated glass NOS 1950 (55.4ma and 56ma) (Highest Ma and Gm)
(!!!) (#1 6V6GT SYLVANIA PAIR 1940's) 6V6GT Sylvania green leaf coated glass NOS 1940's in white boxes (37.5ma and 39ma)
(!!!) (#1 6V6GTA GE NOS) 6V6GTA GE NOS 1960's (45.5ma) (High Ma and Gm)
(!!!) (#1 6V6GTY RCA) JAN-6V6GTY RCA NOS brown base clear glass D getter halos 1962 white box, slightly tilted glass (41.5ma)
(!!!) (#1 6V6GTY RCA) JAN-CRC-6V6GTY RCA black plate NOS brown base coated glass D getter halos 1955 (52.5ma)
(!!!) (#2 6V6GTA GE NOS) 6V6GTA GE NOS 1960's glass slightly tilted (41.8ma)
(!!!) (#4 6V6G PAIR) 6V6G Haltron England NOS gray coated glass 1940's - 1950's (39.5ma and 41ma) (matched on Amplitrex)
(!!!) (#4 6V6G PAIR) 6V6G Haltron England NOS gray coated glass 1940's - 1950's (43ma and 47.5ma) (matched on Amplitrex)
(!!!) 6V6GT=VT-107A RCA coated glass used/tests like new 1942-1945 (39ma) and strong Gm
