(!!!!) (Best Value Pair) JAN-12AT7WC Sylvania black plates NOS 1980 (8.6/7.6ma and 9.0/7.5ma)

1 low noise pair) JAN-12AT7WC Sylvania NOS 1980 original boxes

1 tube) 8.6/7.6ma Gm=5200/4200 

1 tube) 9.0/7.5ma Gm=5200/4500 

Matched on Amplitrex

Good Ma range 8-10ma

Good Gm range 4500-5500