You are bidding on a pair of new old stock RCA type 6A3 radio/audio output tubes.  They come in their original, but poor condition boxes.  On my Amplitrex AT-1000 tester the tubes test strong, one at 101% of the specifications for a new tube for emission, Em, and 99% of the specifications for mutual conductance, Gm.  The other tube tests at 103% Em and 96% Gm, so they both are good strong tubes.  They are internally identical, but with different base markings.  the date codes are Y6 and S1.  They should be great for your radio or amplifier project.  Shipping weight is 14 ounces.  No shipping to China.  Please see my other auctions for more interesting radio and audio items, and tubes.