Danzi: Horn Concerto (unsure of Opus)

[Graham1973]

Anyone know where to find a copy of this one? I've tried and failed to find an Opus number, so I'm hoping that will not be too much of a problem.

[Melodia]

Doesn't look like it actually HAS an opus, so it's possible there's no PD of it to be found...

[Melodia]

And here I am three and a half years later tagging my DLed copy (which means because record companies are stupid, no actual info on something I bought...). I'm almost wondering if it's an arrangement/orchestration of something given the lack of opus number, though it's not of the horn sonatas at least.