Box Valve Cornet

I suppose every collection has a conversation piece which has puzzled the collector and generates a wide variety of comments from those viewing the collection. My conversation piece has been this box valve cornet that I acquired over thirty years ago. Some say it is extremely rare and an important piece. Others say that it is someones idea of a bad joke.

Either way, I still don’t have an answer and would like to solicit comments from those interested just what this is. I know that there are probably less than 10 known box valved instruments in existence.  Mine certainly doesn’t look like the two I saw in the museum in Nuerenberg Germany. I know that Quimbey attempted a box valve horn in the 1870s but have never seen an example of one.

A friend told me of the existence of this horn in the late 1970s and I was fortunate enough to be the successful bidder on it. It is not a complete horn and is missing the lead pipe and bottom plate for the box valve section. The bell section is obviously an E flat Sheppard crook cornet, common in the 1870s. The valve section is like nothing I have ever seen. Can you help me identify it?