This coin N#188218 has the wrong starting Gregorian date which comes from the first date line.
As seen the first date (ND) has the Hijri sub dates (operator input) while the rest have the Hijri date automatically converted to the Gregorian dates. Obviously the minimum Gregorian year is taken from that first line. When editing the page I found that the only way to fix it was to put the Gregorian dates there even though the Hijri calendar is called out.
This, I think is counter-intuitive.
Edit: Something like this would solve future problems:



