Manufacturing Co. radio horn. Automatic Telephone Manufacturing Co. was located in Liverpool, Great Britain. The company was formed in 1911 to make a telephone exchange system under license from Automatic Electric Company of Chicago to serve the Post Office. The two-wire system had a capacity of 500 telephone lines. The Claritone originally sold for 5.00 £ . It is a high impedance aluminum horn with a cast metal neck and base.
The age of the horn needs to be put into context. Because the horn was made in England and acquired in England, it survived the severe bombing of WWII. Two years from being a centurian, it is part of the greatest generation. So if clear tones is what moves your music listening, The Claritone iHorn is for you.