Bahrain 50 and 100 fils

Hi!

I have a question:

Are these two pair of coins bellow double listed, or have they any difference?

https://en.numista.com/catalogue/pieces3163.html
https://en.numista.com/catalogue/pieces42553.html

https://en.numista.com/catalogue/pieces1306.html
https://en.numista.com/catalogue/pieces42554.html

Thanks in advance
Best regards
Jorge

The lettering is different. One saysفلس (fils),  the other one says فلسا (filsan).

Thank you very much for the reply, I missed that detail. My concern was about the KM# number, that is the same for both coins, it is, for sure, a mistake that would be solved soon.

Best regards