Four 5749 tubes, considered highly reliable, from the 6BA6 family. One is Toshiba, and three are NEC. All four have black plates. The Toshiba tube comes with its original box, while the NEC tubes do not. The silk-screened type numbers on the three NEC tubes are missing most of their characters. Only "5", "7", and "4" are printed, with the other three characters missing. All four tubes have been tested and confirmed to work in a radio. Shipped via Nekopos (a Japanese delivery service).