Sarajevo knife and fork.

[gp]

request for advice: I just received this set ( although I knew about the lacking piece of horn on the knife ) was wondering what to do?
Normally from an authentic / original perspective 2 options can be applied:

1. leave as is
2. add a replacement piece in such a way that a clear difference can be seen between original and authentic piece versus addition.

This is done f.i. with historic seals or old books or jewelry.

Henceforth looking forward to your experience and advice being the new kid on the block... THNX a lot