PL81 Tesla is a beam tetrode with anode dissipation of 8W, intended for use as horizontal deflection amplifier in televison receivers. PL81 is a direct replacement for the 21A6, N120 and PL820 tubes. It also directly replaces the PL81A tube which has a little different shape. All of the available pieces are new in box and tested (please look at the gallery pictures). Year of production: 1971.