Can you show is a picture of the horn in question, or one done in similar style ?
It really depends on how the horn was finished in the first place, and what you want it to look like when the "restoration" is complete...
If the horn was originally paint black ( or another opaque color ), and perhaps had gold striping along the "spines" / edges, that is one thing, and fairly achieveable.
If it is something like a Tea-Tray Company with tinted, transparent lacquer, and flowers painted on top, that is a whole 'nother story.
The "flowered horns" usually were made of steel, which was then tin-plated, which gave a very bright, almost mirror-reflective surface, then base-coated with a tinted lacquer, which gives a similar effect to modern "candy-clear" coatings, usually with a red, blue, or green tint, then the flowers were painted-on by hand. I do not know if a protective coat of clear lacquer was sprayed over the flowers or not.
The tough part about restoring these horns, is getting the substrate ( horn surfaces themselves ) cleaned and prepped. Since the color coat is transparent, any discolorations (rust ,black stains, loss of tin-plate) is going to show right through the lacquer.
Frequently, the surface is riddled with streaks of rust, where the original tin-plate was thin or scratched, some worn-through from handling. Then the steel base-metal begins to rust, stain, and pit.
Assuming you can find someone with the appropriate ability to paint the flowers, and spray the tinted nitro-cellulose lacquer, unless the horn shell and tin-plating can be made "perfect", the end product might not seem worth the effort ?
The attached photos are of an Edison "Banner" Home, model B and the Tea-Tray Co horn that came with it. I have been told that the horn is somewhat rare, because it is decorated with pansies. Apparently Roses are more common. It has more than its fair share of wear and tear. I would like for it to look better, but several veteran collectors here have suggested that I leave this horn alone.
