New-Old-Stock (NOS) tube.

The 6CD6GA is a beam-power pentode designed primarily for use as the horizontal deflection amplifier in television receivers which incorporate large deflection-angle picture tubes. Features of the tube include an extremely high perveance, high plate current at low plate and screen voltages, and a high ratio of plate to screen current. The 6CD6GA may be used as a replacement for the 6CD6G. It differs only by employing a straight sided T-12 envelope and incorporating increased maximum ratings for plate dissipation, pulse plate voltage, and bulb temperature.