Brand

• (no filter) 

  EUROPE (16) CEE (1) CIFTE (1) MARQUES DIVERSES / VARIOUS BRANDS (25) MAZDA (1) ORION (1) PHILIPS (1) RADIO TECHNIQUE (1) RTC (1) SIEMENS (2) USA (11)

Interests

•  Audiophiles (44)
•  Collectors (61)
•  Radio hams (61)

Socket

•  B7G - Miniatur (7 pins) (2)
•  B8A - Rimlock (8 Pins) (2)
•  B9A - Noval (9 pins) (20)
•  B10C - Decal (4)
•  K8A - Octal (8 pins) (8)
•  P8A - Transcontinental (8 pins) (1)
•  U6A (6 Pins) (1)
•  U7A (7 Pins) (1)

Heating parameters

•  4V (1)
•  6.3V (24)
•  6.3V / 12.6V according to series or parallel assembly (8)
•  8V (4)

Décennie

•  1930 (6)
•  1940 (5)
•  1950 (8)
•  1960 (8)