Glass and metal vacuum tube with four metal prongs at the base, stored in its original orange and blue cardboard box. The box features atomic and planetary motifs in white and blue, with the text “General Electric Radiotron” and “Canadian General Electric Company Limited.” The tube itself bears a printed label identifying it as made in Canada for General Electric, model number 37.
This component was used in radio receivers for amplification and modulation. It represents the essential role of vacuum tubes in communication and broadcast technology prior to the development of transistor-based electronics.