I don't know how to work with wood and horn or silver. Also find plates or wire of silver and horn is easy, but I still don't know what are the wood species traditionally used.
So I would not risk changing the clothing of the blade.
Actually, I did not meant to change the fittings to make the piece looking more beautiful: It will be next to impossible to find genuine ones; also crafting replacements of reasonable quality will be very tough (and also not easy to make them looking old enough).
I believe to strip all fittings and display the nekkid blade next to your latest example might be a valid (and arguably sensible) option though.