1920'S THE NACOMETER MORSE CODE TRANSMITTER/TRAINER RADIO. I can’t tell you much about it because I really don’t know. There isn’t another on eBay so I’m guessing this is pretty rare and why I priced it as I have to start. One of the screws the top center is a little loose, but overall it seems to be in pretty good condition. Believe it uses batteries, but not sure where they would go, etc. so you need to be the expert. It may work perfectly fine. I’m just not gonna sell it though I know it.