Question on cleaning and partially restoring a Moroccan Nimcha

[kamals]

These are from tonight. The rust is somewhat gone from the guard, though there is deep black pitting.

In the previous photos the glossy stuff on the handle was oil. Unfortunately it deeply darkened the horn. Which is, itself, pretty badly de- aminated (I'll try to get a good close-up picture of the handle).

Cheers everyone, thanks !