Hello, this is an Aghlabid dirham. It was coined in al Abbasiyah, in 232AH. There is one like this in Tonegawa collection.
I have not found any reference nor any public auction about its rarity or value.
Can anybody help?
Thank you very much.
Album's Catalog of Islamic Coins: Under the Aghlabid ruler Muhammad I the silver dirhams, B444, are all from the al-'Abbasiya mint and given a rarity of RRR (extremely rare, almost never available; few collectors will ever have the chance to acquire these pieces).