For sale Hytron 6SN7GT tubes.
Early production featuring black plate, bottom square getter and three hole plate!
Very rare version, similar to Sylvania Bad Boy 3 hole plate, but to our "ears" even better!
139 code on the base = 39th week year 1951!
Great sounding tube, great upgrade for any tube preamp, amp etc!!
Tested on RoeTest V10 (the best modern tube tester!)--see attached pictures for detailed measurements
PRICE IS FOR ONE PAIR (TWO TUBES).
I will pack and secure tubes good.
Replacement black boxes!
Feel free to contact me.