• Country
• United States of America (USA)

• Manufacturer / Brand
• Ajax Electric Specialty Co.; Saint Louis, Missouri

• Year
• 1924/1925

• Category
• Detector-Radio (Crystal or diode, without tubes/transistors)

• Radiomuseum.org ID
• 31742

• • Brand: Marveltone

• Main principle
• Crystal or Solid State Detector

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Crystal [old] - Ajax Electric Specialty Co.;

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

• Mentioned in
• Radio Retailing (Radio & Television R.) (January 1921, Radio Retailing magazine advertisement on page 91)

• Other Models

• Here you find 6 models, 2 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Ajax Electric Specialty Co.; Saint Louis, Missouri