That alone would make fantasies unlikely. Fantasies need a market.
In fact it is rather easy to obtain the first series and there are a lot of online shops where they are being sold.
Also on other coin forums there are quite a few members who have these pieces.
I believe the difference I wrote about here
and the fact that there are advertisements from China where
they are being offered in bulk as well as the many variants that exist, prove that there exist fantasy imitations
and I am sure that there are many more fantasies than the real 'coins' issued by ISIL.
I don't know what to consider the pieces that were really issued by ISIL which are most likely the 1 and 5 dinar coins of the first series and possibly also the second series. Are they coins, tokens, fantasies or...