Ancient Coin with Crown of Isis?

Hi!  I have another request for your help, if I may.  It's a very worn bronze that I acquire a while back in a small lot of unidentified Greek bronzes.  It measures just under 20 mm at its widest point and weighs 4.35 g.  The obverse has an indistinct head facing right, while the reverse shows what looks like the crown/headdress of Isis.

The latter is relatively uncommon, I believe, but I have had some trouble finding a match.  It looks similar to the Cleopatra issue from Patrai but is a bit different.  Do you all have any ideas/suggestions?  

I don't think it is the Cleopatra one you linked, as the top part of the headdress is too thick and the nose seems wrong.  

Here's something that looks closer, I think… but it is from outside my area of expertise so I'm not saying it is a definite match.

https://www.coinarchives.com/a/lotviewer.php?LotID=2452193&AucID=6109&Lot=236&Val=7785246a2e205e731929172a9b622912

Thanks so much!  I did not see any reference to the Syracuse coins in my initial research (still learning all of the online tools, I fear), but this seems like a much better match.  

Purplexed

I don't think it is the Cleopatra one you linked, as the top part of the headdress is too thick and the nose seems wrong.  

 

Here's something that looks closer, I think… but it is from outside my area of expertise so I'm not saying it is a definite match.

 

https://www.coinarchives.com/a/lotviewer.php?LotID=2452193&AucID=6109&Lot=236&Val=7785246a2e205e731929172a9b622912