Egypt - Differences ?

If your worries are that it's fake then I can almost surely assure you that's not the case here. Your coin looks good in my eyes.
I'm thinking this can simply be die varieties - multiple dies used for one coin type that are not identical in every detail.
If it's normal? In general, it is as it still occurs today, although not as often. If you take a peek in the US Modern Error/Varieties subforum you'll probably find a recent thread where someone with a good eye has spotted a tiny differance from other coins of the same type and year.