Two RCA 6SN7 vacuum tubes from the 1950's early 60's - staggered black plates - one tested lower and one strong - matching date codes. 100% represents what you would expect from a NOS tube on our Amplitrex and 65% is considered too low to use. Please feel free to return items that do not meet your needs within the 30 day period, we only want satisfied customers! Thanks and God bless!
"But seek first the kingdom of God and his righteousness, and all these things will be added to you." Matthew 6:33