Made in Chelsea Massachusetts by Edwin Armstrong. Most of these radio of the Chelsea were a 1 tube radio, this one has 2 tubes that are missing. This receiver was used between 1915 and WWII notable for the ability to amplify weak radio signals. Probably a WD11 tubes but not sure. Missing the knobs and tubes. Information found on Google. Couldn’t find any information on this 2 tube model. Radio measures 7.25″ wide X 7″ High by 6 deep.