(!!) (Best Value Pair) 30 Sylvania NOS branded DELCO NOS 1947 (3.3ma and 2.8ma)

1 pair) 30 Sylvania NOS branded DELCO NOS 1947
1 tube) 3.3ma Gm=800 very small hairline crack in base
1 tube) 2.8ma Gm=800

Matched on Amplitrex

NOS Ma = 3.1ma

NOS Gm = 800-900