one NOS & NIB TFK  ECC801S Telefunken ECC81 12AT7 

diamond base <>  tested strong tube

READINGS

measurements were made on a precisely calibrated Metrix U61DM with Va 250V, and -Vg1 2V

Ia  13/12 mA

where a new tube gives 10mA with Va 250V, and -Vg1 2V

worldwide shipping with tracking in well made postal small parcel and delivery against signature for 9 euros.

possibility of grouping the delivery, see my other ads.

Important Reminders: “You will get what you see in the pictures"