Abbasid Caliphate Dirham – Confirm ID, mint and year?

Hello

I recently purchased this coin unattributed from my LCS. 

weight = 2.86 g

diameter = 24 mm

it is not magnetic

I have tried to identify it and I believe it is this dirham from Harun al-Rashid :

N#52524

I think the mint is Madinat Al Salam (Baghdad).

I am really unsure about the date, but it might be 188 AH.

This is my first attempt at identifying an Arabic coin so any opinions on my identification, mint and year would be greatly appreciated. 

Thanks.

pituophis

Your identification is accurate. The date is a little bit damaged but it's 188 A.H. minted in Baghdad.