Identifying This Cornet?

I got this cornet from the flea market that I have no information about. I asked the seller and he had no idea either. I also asked my local music store and several trumpet forums, only with the same answer. The horn is what I think is an American Triumph from the company Harry Pedler and Sons by looking at it, made in Elkhart. It's serial number is 43218, but since I don't know about the manufacturers I can't find out the age and such. It looks like it has the shepherd's crook, only it has a more trumpet-shaped curve than the traditional crook. It also has VERY fast valves, which is due to the rare bottom spring caps, so it seems like it's quite an old trumpet. It also has a much larger mouthpiece opening, so the only mouthpiece that I could (barely) fit on there was one of my long-shank Holton mouthpieces, so I'm guessing it may have had a custom mouthpiece (which it didn't come with.) I found out only 2 things in my research: 1. Harry Pedler was also the creator of the first metal clarinet and 2. Harry Pedler and Sons was bought out by Conn, but when I called their customer service to ask about it, they said they have no history reports, so they pretty much don't know anything about the company they purchased. :/ If anyone is able to help me find out more about this it would be very much appreciated. :)