In 1956, my parents bought me a cornet. It looks more like a small trumpet. I still have it. The engraving on the bell is USA, with the S in the middle larger in size than the U or A. I have searched on the web, but I have not found info on the manufacturer. The only other marking on the instrument is the serial number on the valve body--169984. Does anyone have an idea regarding the manufacturer or where I might find the info?