2pcs 6X6S / 6X6C Tubes Metal Base SAME DATE XI-1955 NOS TESTED
Double Diode Detector 
Up for sale lot of 2pcs 6X6S / 6X6C tubes from one batch.
Made in the Novosibirsk plant XI-1955

I ship with tracking number.
Items are well packed.
I always answer all questions.