Hi Jonathan
Probably not very worn at all, just abysmally struck in the first place.
The best reference for these is Sylloge Nummorum Arabicorum Tubingen,
Vol XIVc (2002) by
Florian Schwarz.
Your No.2 appears to be SNAT XVIc 266, Nuh ibn Nasir with governor Muhammed, no date, struck at Badakshan, though their
obverse is so
poor I can't be 100 % certain. The
reverse is the same die on yours and theirs.
I am pretty sure your No.3 is SNAT XVIc 279, Nuh ibn Mansur with al-Harith, no date, struck at Badakshan (though this
obverse die was used with at least four other reverses)
I'm afraid I haven't been able to identify No.1 yet, but it is likely also from Badakshan.
Best wishes
Alan
