Antique Automatic Switch Company Coil. I’m guessing this is some kind of MORSE CODE TELEGRAPH Key Relay SOUNDER. Item is un-tested. Please look at pictures and don’t hesitate to ask any questions. Happy bidding.On Dec-02-19 at 06:59:02 PST, seller added the following information:This information was pointed out to me this morning. "Your item is an obsolete antique Alternating Current, Open Frame, Lighting Contactor. The label shows that the coil is the Alternating Current typ...e. AC relays cannot be used on Direct Current circuits including all telegraph lines" Thanks for the info. I was guessing on what this item actually is...