There are two schools of thought here and one most collectors have pondered at one time or another. The most difficult decision for me was when I had to decide what to do with my box valve cornet. I acquired it in 1970 at an antique shop in Illinois and since it looked so strange, I wanted to research box valves. I soon discovered that box valves are the rarest kind of valves and finding an instrument in a collection was almost impossible. In the early 1970s while visiting Germany, I found two instruments at a museum in Nuremberg that were made by the inventor of the box valve, Schuster, in the 1820s. From the U.S. Patent office, I acquired a copy of the Quimbey patent for horns they intend to make in the 1870, but in searching for box valved horns I discovered that there were very few in existence. One in a Museum in Rhineland Germany and another at the Shrine to Music in Vermilion S.D.

Since my instrument was incomplete (missing the lead pipe, one valve slide and one square valve mechanism, I had nothing to go on in completing the restoration. Finally, Byron Autrey attempted to recreate the missing 1st valve mechanism and was quite successful, but would not attempt further restoration as he had nothing to use as a model. Bob Pallansch in Virginia also would not attempt it for the same reason

I have finally given up my quest for restoration and I believe there are probably no more than ten existing horns with box (square) valves in collections today. So, this mission is unaccomplished unless there is someone out there with another example of a horn with box valves. The valve was invented by Schuster in the early 1820s and Quimbey was the last to market a successful horn.  The box valve seems to have died a quiet death in 1870, never to be heard from again. Just another dilemma for a horn collector desiring a restoration.