This is a metal telegraph key with a slide switch to turn it on and off. There is text that reads, "BUNNELL/ BUNNELL TEL. & ELEC. CO./ NEW YORK, U.S.A.". The key measures 1" (h) x 2.75" (w) x 5" (l). The telegraph key is attached to a wooden box by cloth-covered black and white wires. The wire measures 24" (l) and ends in a 1/4" phone plug. The wooden box measures 2.75" (h) x 6.75" (w) x 6.75" (d).
The key was part the telegraph operator tapped to transmit telegram