(!) (PAIR) 6AS6 Sylvania branded RCA black plate NOS 1978 (4.8ma and 5.2ma)

1 matched pair) 6AS6 Sylvania branded RCA black plate NOS 1978

1 tube) 4.8ma Gm=2400

1 tube) 5.2ma Gm=2500

NOS mA range 4.5-5.2mA+

NOS Gm 3000-3200+