Available for immediate purchase is one (1) IEC MULLARD 12AT7 (ECC81) twin triode TUBE/VALVE, made at the Mullard Blackburn factory in Great Britain. There is little wear of the tube lettering, and some adhesive residue covering the logo. 

The tube construction features grey plates, with small Halo getter. The Philips/Mullard factory code is not very legible.

This tube has been tested on my calibrated TV-7 Mutual Conductance tube tester with a strong, balanced reading of 66/67 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.