Here is the type, fractions are less common than the rupees, the weight of yours would be ¼ rupee, there are traces of nagari script around your sunface
Here is the right way up for the script side, you can see it's similar but not quite right, probably beacouse I think I can see in the middle is a button fixing soldered on? Script reads as Shah Alam sikka mubarak
Hi, thanks for taking the time to help. You are right it does look like this coin(?) had been altered into a button at some point. I wonder what it’s KM number is? I’m finding info with ones with text within a laurel wreath but my one is different.