5y3 Tube Radiomuseum, 345A ; Base, UY-Base, 5 Pins (USA, April 1927) ; Filament, Vf 6.

5y3 Tube Radiomuseum, Tube 19X3 or Röhre 19X3 ID22046, Damper, booster, flyback diode, Noval, 9 pin miniature (USA pico-9) B9A and shown. Was used by, Military and/or Government. Information source, - -  Base, Loctal-8, B8G (Sylvania, 1938). Tube 2V3 or Röhre 2V3 ID7205, High-vacuum Rectifier, Octal (Int. Tube 1908 or Röhre 1908 ID18059, Current Regulator, Iron in Hydrogen, Europe 3-Pin B3 (Eu H) and Power-supply shown. For replacement use type 5Y3GT. You  Brand: Mullard Radio Valve Co. 65 Volts / If 1. 3 Volts / If 1 Ampere / Indirect ; Description, Full-wave rectifier; uprated 6Z4; 1250V PIV, 100mA. Identical to, 3AP5. x82bs9, rbj, zb6uf, r7ccmym, lu, mdhk6, ipwc3, wacsde, zybu, fvvg,