Offered is a vintage 3-Contact Struthers-Dunn Transmit-Receive Relay for an old Ham Transmitter. The relay is in an old aluminum project box, missing its front. (3) old school antenna connectors are marked as follows: XMT, ANT and RCV in pencil handwriting. Likely home-made with the plans from a magazine. Part no. 84XCX (it is hard to see) Shunt Coil: 115Volts 50-60 cycles. Contacts: 230Volts. Not tested. Offered strictly "as is" due to age. No returns. Heavy. 5 pounds packed up. NO RESERVE!! Thanks for looking.