The EZ11 is a full wave rectifier. It is rated for up to 60 mA output current and requires a minimum series resistance of 600 Ω. The maximum reservoir capacitor is 32 μF.
We have the complete line-up of valves from the set this valve was used in. Frequency changer ECH11, IF amplifier EF11 x 2, demodulator, AGC detector and first audio stage EBC11, push-pull audio output EDD11 and rectifier EZ11.
The identification is on the dome. This is painted on and not stamped into the metal.
The complete footless base.
The wide metal tube envelope is 36 mm in diameter, and excluding the footless base pins is 42 mm tall.
Reference: Datasheet. Type EZ11 was first introduced in 1938.