Up for sale, I have a matched quad of NOS 6P3S (6[pi]3C, 5881, 6L6GC) Soviet tubes, Foton brand, same date. I bought these to use in my Decware Torii MkIII, but I ended up selling the amp before I ever got to try them.  I am offering them for $50 for the quad plus $10 to cover USPS shipping.  Please feel free to email me at christopherporadita@gmail.com with any questions.
Thanks for looking!
Chris