(!!!) (Recommended Pair) 30 RCA Cunningham engraved base 1930”s low hours/test like new (3.3ma and 3.4ma)

1 pair) 30 RCA Cunningham engraved base 1930”s low hours/test like new
1 tube) 3.3ma Gm=800
1 tube) 3.4ma Gm=900

Matched on Amplitrex

NOS Ma = 3.1ma

NOS Gm = 800-900