First horn? Really? Hmmmm... I don't think I like you very much. It took me longer than I would like to admit before I did something like that. Very well done. Bravo, sir.
I have heard but have not ever tried it, but if the horn is heated up to 325 degrees, the engrailing is much easier to cut. I would try that on a junk horn before I ever tried it on a nice horn like this one. I think I would dip it in hot oil rather than use a heat gun as well.
Good historical notes regarding the local area. Gave everyone a feel for where the horn "originated". I did not notice if you signed it or not. If not, I think you should, and date it.
Anyway, great job, thank you for showing it.
John