After Seven Years, I Think I Got Hosed

Here is my Islamic coin (Ottoman Empire 100 Kurush gold)
I bought several other coins from this seller, and the others were definitely verified authentic, but this one in particular after seven years ,thought was real, but after I ran it through Chatbot, they told me the year was missing and it could be a jewelry piece. bought from ebay naturally did not know it was a fake until now. figured I post some pictures to see what everybody here thinks.
And it slipped by me, didn't notice the sultan year was missing#129322;




A fake on ebay?nooooo . that doesn't happen. .
My XRF tells me it is gold with silver and copper.it's 7.212 grams correctly an XRF told me it was 91%gold 8.1% copper .05% silver. AND .03% iron! which I thought was surprising but it's natural for that particular gold from the 1800s. I'm curious of what the experts think here.

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