All purchased as NOS.
Pair of 6H6n "74" (Russian). Date Code 1974.
Came from a NOS bulk shipment. (Not sure if I used them, so they're either NOS or almost NOS.)
One 6H6n "75" (Russian). Date Code 1975. Used. (Impressive tube!)
$75, USA Shipping and PayPal Fees Included.
