Need four 813 NOS tubes

[Highspeed]

Hi

I have done a 813 tube based amplifier 4 years ago and i need to replace the tubes now. When i have built the amp, the 813 were not news....

Someone want to sell some? I am in Canada.

I have tried to find NOS 813 on the net : seems to be scarses!

Someone has tried the chinese 813?

I am open to ideas.

Regards

 

[Highspeed]

Nobody

Know the 813 tubes?🙁

Any idea about chinese 813?😕