6E3P (EM84) magic eye, russian made, NOS - Retroamplis
power supply - Magic Eye Tuning Tube Variable Negative Voltage - Electrical Engineering Stack Exchange
EM84 | RUSSIAN | TUNING INDICATOR RADIO TUBE At 15 € HT on Electols
Magic Eye tube 6E1P the russian EM80 equivalent tested on the 13EM7 amp | TAO of Tubes
Magic Eye Tube 6e2 Em84 Vu Meter Audio Level Indicator Level Circuit Board Adjustable Sensitivity For Signal Amplifier Power - Instrument Parts & Accessories - AliExpress