• Country
• United States of America (USA)

• Manufacturer / Brand
• Mallory, P.R. & Co.; Indianapolis, IN

• Year
• 1950 ??

• Category
• Power supply/conditioner or battery or charger 

• Radiomuseum.org ID
• 259354

• Wave bands
• - without

• Power type and voltage
• Is a battery or storage battery / 1,40 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Mercury "A" Battery RM-4 - Mallory, P.R. & Co.;

• Dimensions (WHD)
• 1.1875 x 0.625 x 1.1875 inch / 30 x 16 x 30 mm

• Notes

• Micro cell mercury battery for hearing aids.

• Author
• Model page created by a member from A. See "Data change" for further contributors.

• Other Models

• Here you find 36 models, 29 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Mallory, P.R. & Co.; Indianapolis, IN