Available for immediate purchase is one (1) ROGERS branded 12AT7 ECC81 twin triode TUBE/VALVE, made at the Mullard Blackburn factory in Great Britain. There is almost no wear to the tube lettering. 

The tube construction features grey plates, with large Halo getter. The Mullard factory code is Tk3 B5H4.

This tube has been tested on my calibrated TV-7 Mutual Conductance tube tester with a very strong reading of 76/70 where 50/50 is minimum and 77/77 is nominal new. 

This will be provided with a replacement white box and will be well packed to ensure a safe arrival. 

Tracking is included in shipping cost for Canada and USA. Tracked shipping is not included for International shipments.

I am happy to combine shipping costs where possible.