(!!) (BEST PAIR #1) JAN-5725W=6AS6 Philips by Sylvania black plate NOS 1982 (4.6ma and 4.6ma) (same Gm) 1-2% matched

1 matched pair) JAN-5725W=6AS6 Philips by Sylvania black plate NOS 1982

1 tube) 4.6ma Gm=2900

1 tube) 4.6ma Gm=2900

NOS mA range 4.2-5.2mA+

NOS Gm 2500-3200+