Arabic silver tray

I found this tray in a mix box my mom bought. It doesn’t have any Hallmarks on it but there is Arabic writhing on it. i don’t have silver testing kit but did use other methods to check if its silver. Ice cube melts really fast on it and it gets cold and warm very quickly. Chlorine bleach leave a black oxidation mark on it. It also has pseudo-magnetic properties if tested with a rare earth magnet. It also rings like a bell when stuck. It weighs 310g and has a diameter of 20cm. Its 9mm high. Any information will help.
Jannie

So I got it tested at a jeweler. He said it may well be sterling and that its hand hammered tribal silver. Also told me not to polish it.
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Some better pictures of the Arabic text and something that may be a hallmark.

Jannie
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