Hi up for consideration is one Mullard ecc31 black plate British made tube 

 still retaining most of their original markings .

Tested as per data characteristics , +250vdc / - 4.6 = 6ma for 100% emissions

some bases were loose but have been repaired with flowable silicon

these have no indication of being used previously , there are no burn marks on any of them.

Life tests seemed to indicate good life expectancy . Its possible they may have had some use .

what you are buying is one tube ,

thanks for looking.

If there is a particular tube you are trying to obtain then send me a message and i will see if i have it .....there are so many tubes to cover that listing can be quite a job to keep up with.....

Please note that I can send parcels through budget postage that can save you some cash however ebay will not cover you if the parcel is lost .....Australian economy post does register the item and issues a registration number but does not issue tracking with it .....please send me a message regarding this prior to checkout if you wish to do this.

If you choose economy post then YOU become responsible if the parcel is lost and no refunds will be sent for non collection..