Philips made (two are labeled Mullard, but they are all made by Philips) TY6-5000A high power (6000W anode dissipation, medium gain - mu 32 ) triode output tubes. They are unused items. As a transmitter tube good up to 75 MHz.The price is PER TUBE. Limited quantities available. This item is shipped from Britain, in North America or Asia please allow 2 to 3 weeks for delivery.
Here is the spec sheet for this part: http://scottbecker.net/tube/sheets/129/t/TY6-5000A.pdf