Afghan military saber for translation request

[AJ1356]

A very peculiarly interesting sword, ofcourse it does have a governmental seal.(why it is engraved not stamped )
On the inscription if you can get it one line at a time i can get it translated for you (the reflection is not helping). on the date it say - fee sanat hijree 1298
في سنة هجري ۱۲۹۸ , now that is in Arabic meaning { In hijree year of 1298} why would they write it in Arabic, that is why i said peculiar. Why would an Afghan governmental sword have Arabic writings it baffles me. Now the year , right now it is 1390 HS (solar) and 1433 HQ (lunar), The mark is from the time of Nader or Zaher shah, maybe Amanullah.That would put us at most to 1918, the sword is around 92 years old (if we go the solar way), which would put up around 1913. Amanullah came to power around 1918. I have not seen Habibullah's swords to be of that style, or that seal.

Correction: i just noticed that I calculated wrong, the age is right at 92 years, which puts it at 1919 which is right for Amanullah's period.