Help Identifying an Ottoman Empire Coin?

[treculi]

I do not know much about coin collecting but have recently become more interested while having to go through my deceased father and grandfathers coin collection. The majority of the collection is 1800 and 1900 European and U.S.A. coins however I have come across 3 pre 500 AD Roman coins and what I am guessing is an Ottoman Empire coin. I’ve been searching around the web and the closest I’ve come to guessing what it is an Ottoman coin around the time of Mustafa one or two. The coin is silver and 32 mm in diameter.

Any help or suggestions would be appreciated.

[Pekka K]

Maybe like this (date ?):

http://www.zeno.ru/showphoto.php?photo=75614

Pekka K

[KIR]

Ottoman AR Kurush (corresponds to 40 Para also) Abdulhamid I Tunus mint unfortunately the date is worn off.
Also note that the locals knew this denomination as Riyal as well.

Dates this series was minted in was 1187AH until 1202AH. These coins are considered to be rare, and are still desired with about 50% wear as seen in the attached picture.

[treculi]

Thank you Pekka K and KIR for pointing me in the right direction.