Odd Ottoman coin

Small coin from the Ottoman Empire the year 1171 the ruler was Mustafa III but the crafting number is 87 , usually it is 1 during that time , it is struck in Egypt. It's basically weightless and very small. In Arabic: ضرب في ٨٧ مصر سنة ١١٧١

Mustafa III coins used both RY years and AH years. So yours has a date of 1187. Here's a couple like that.

N#89496

N#42255

Maybe Egypt too N#90712

That's the thing 

All of these got a struck AH number 1 or 83 but the one that I found got the  87 number, and not struck in Islambol (اسلامبول) its clearly got s (س) In different writing style 

The three I posted have 87 year.  1187 just like your coin.

Thank you indeed sir .

By any chance you know how much does it worth?

Am looking for selling it , I'm not much of a collector myself.