Technical Sparton Trumpet Horn

Anyone have information about a Sparton four trumpet horn? All that I have found is that it was made in the 1930s and possibly for one year only. I would like to know the value, how to test it, is it musical, and anything else you can provide.
Thanks, Eddie

 

I saw one at a swap meet several years ago,,they are big and to be perfectly honest ,down right fugly. HRP

 

I sold a double and triple set pf Spartan Chime Horns for between 200-300. Hook it to a battery charger on 6 Volts and it should cycle through the different lengths to make different musical notes. The Caddy-Lasalle dudes love these. Show-offs.