Iranian coin identification help please

My thought is that this is KM# 824.16.  But I'm not so sure.  What date can you see on here?  What mintmark?

This silver coin is about 10.6mm and weighs 5.06 grams.

Many thanks for the help.

Drew

Yes, I think your attribution is correct. Your coin does match the one listed in Zeno. 

https://www.zeno.ru/showphoto.php?photo=127780

The date on yours appears to be 1280 (around the “Zarb” toward the bottom right of the first photo). Because of the good match, I  would assume that yours is also from the Tabriz mint (maybe someone who can read Arabic can confirm or correct this). The strike on your coin is rather off-centered and on a large flan, but the weight is within a reasonable range.