Wrong Gregorian date for Egypt KM#412

I spent a lot of time searching in vain for an egyptian coin dated 1967.  I finally found the coin I was looking for here:
https://en.numista.com/catalogue/pieces1818.html

I wasn't able to find this page through the search because the gregorian year is wrong.  The coin's gregorian year reads 1967 ١٩٦٧ , not 1968 ١٩٦٨ .  See for yourself...



(This would have been a good time to use my proposed "flag an admin" feature instead of writing a forum post.)

yes - you might be right. something like that is planned as far as I read.
however: we will encounter this type of error quite frequently - that is because the date conversion
reverts to a wrong calculated number whenever french or english comments are added on the respective
version of Numista. Means: if this coin got completed on the french version and it is edited for the
english (or vice versa) the manually adjusted date switches back for both versions.
islamic date calculation differs from gregorian. so that it could either be 1968 or 1967, the calculation
prefers 1968 so we have to adjust it manually.