Ghengis Khan - Billon Dirhem

The identity seems fine, though your pics are upside down. These billon coins are usually called "jitals" rather than "dirhams". The script on this coin is an early form of Arabic. See this zeno.ru page for a bunch of similar coins.

With ancient and mediaeval coins, it can sometimes be hard to tell the difference between wear, corrosion and weakness or defective strike. I personally tend to lump it all in together when I grade an ancient or mediaeval coin, since the effect is similar and the net results as far as effect on desirability and price is similar.

VG would be a fair call for this coin, I think. Perhaps down to G; it depends on whether the strange pitting effect visible in the pics is actually on the coin or rather, as I suspect, an artefact of the scanner.

I wouldn'g get too hung up on grading ancients. The sticking of a grading label on coins was useful when coins were sold via dealers lists and pictures wern't available. Now with digital photography available to nearly all hardly any coin is traded without a picture.

Grading is very difficult with ancients - your jital is not strictly an ancient though as it's hammered the same qualifiers apply. As Sap says, how do you differentiate between a poor striks, wear, and a worn die with a simple VG or F. The answer is of course you can's so grading these coins is a best guess or rough estimate.

This is a case of the picture being worth a thousand words and if you have the picture, a couple of letters indicating grade doesn't add anything. There aren't Krause values you can look up either so it's a pointless exercise there too.

I have a lot of hammered - well into 4 figures - and I haven't graded a single one of them, because there really is no point.

Have fun with your new collection.

I personally consider the "ancient" era to end in 500 AD. Technically coins like this would belong in a "Mediaeval and Islamic" section but this forum doesn't have one of those - there isn't enough interest in such coins to warrant it. I generally put them in "World coins" when I move them from elsewhere, such as "ID Required", though if people post them here in the "Ancients" section, I don't move them.