That is a Shamshiir and is expertly done in a dominant ladder pattern. I will have my interpreter have a look at the script although it is bound to be one of the standard famous artisan style inscriptions even though to me what is just as important is the magic square treatment ...Talismanic and great to see on this blade.
I suspect the hilt has shrunk away from its metal mounting but you might be lucky in repairing that with continued treatment and oiling...
I will get back to the translation in a day or two...
