Vacuum Tube - 6AX5GT, Rectifier, Full Wave
New-Old-Stock (NOS) tube.
The 6AX5GT is a full-wave rectifier of the heater-cathode type intended for use in AC operated and automobile receivers. Because of its heater-cathode construction it has the same heating time as that of other heater-cathode types in the receiver. Use of this tube prevents excessive voltages from appearing across filter condensers during warm-up period.