(!!) (Best Pair) 6BA6 RCA black plate NOS (10.6ma and 10.6ma) 1% matched
(!) (BEST SINGLE) 6BA6 SYlvania NOS 1960's (10.8ma)
(!) (BEST SINGLE) CV4009=6BA6W Brimar England NOS 1969 faded printing (11.5ma)
CV4009=6BA6W=5749 Brimar UK NOS 1969 (12.6ma)
CV4009=6BA6W=5749 Brimar UK NOS 1969 (9.5ma)