See if it's the following coin:
Pakistan's 25 rows of sand coins have stars and the moon on the front.
Turkey's 25 old lira coins have stars and the moon on the front.
If it is not the coin in the picture above, please upload it. Uploading can be done by clicking the camera icon in the lower left corner of the question interface in Baidu Know Mobile Edition.
If it is really impossible to upload, you can describe the text on the currency for easy identification.