[gp]

so it arrived today, cleaned some dirt and had a good look.
This horn handle is not as dark as the Ottoman horn you see in the Balkans or what you call present day Turkey; that looks close to more black.
This horn is more darkis brown when you look close at it,
As the seller's description was correct: the ferrule and star or flowerlike ornaments on the handle / grip are silver.
The 2 pieces of the handle / grip have a red metal in between them, ending into the ferrule: copper/bronze?

So hope this helps you forum member with your determination on its age ...