Need help with Arabic or Iranian mark?

Hello everyone, I’m cleaning out the attic of a house that I purchased & found a box of engraved napkin rings & I am trying to determine their origin and material. Photo attached. I’m new to this forum & looking forward to learning more as I unearth treasures!

Thank you so much for any advice anyone has!
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This is an Egyptian mark for 900 standard silver with the Cairo assay mark. The right hand mark is a date code which doesn’t seem to be noted on this page: Egypt silver hallmarks - Egyptian hallmarking system although it is illustrated.

Phil

Clues seem to point to a date after 1966. See Phil’s excellent link.

Regards
Jan