I have up for sale this very cool find. I found this instrument along with all of the others that I have on right now too from a great old estate. I have no clue about any of these pieces so please email me with questions or additional photos. This piece looks like an all brass metal either trumpet or cornet. The piece is VERY cool. It has amazing decorations carved into the piece-great designs. It is a very old piece. It is marked 1924. On the bell there is great decoration as well as: LLEWELLYN made Frank Horton Elkhorn Wi. There keys even have mother of pearl on them. The slides do work. There is a mouthpiece in the case but I am not certain it belongs to the piece but I am not certain. There is even an old mute in the case. The piece has what looks like a serial number on it as well. The case is all original even has the original label on the outside. Frank Holton out of Elk Horn Wi. It has great patina-I didn't clean it at all. Just a couple of super minor dings. Buyer to pay shipping. Thanks, Ron.