Coin Identification Help

silver
rectangular; approx 18x15mm
very thin flan, won't weight much
Any help would be much appreciated
0
silver
rectangular; approx 18x15mm
very thin flan, won't weight much
Any help would be much appreciated
Comments
I want to say "Mediaeval Spanish, either Islamic or a Christian imitation" - I know square coins with Arabic come from this region - but I am not familiar enough with the series to be certain.
Roman emperor Marcus Aurelius, "Meditations"
Apparently I have been awarded one DPOTD.
Hm, I hadn't even thought of that. Thanks for your help, I will search down that track