Copper square coin with "PAULIN" on center

Hi everyone,

I recently owned this copper square coin but it seems quite hard to find what it is actually
So i posted on the french side forum. I had some good answers but it isn't identified yet..

This is a one side coin i think
you can find the french topic here : https://fr.numista.com/forum/topic103638.html

Wieght : 4.03g 0.14 Oz
Dimensions : 2 cm x 1.9 cm by side, and 2,8 cm diagonal 0.78 inch x 0.74 inch and 1.10 inch diagonal


Here's that coin :




Thank you all

i do not recognize what Paulin should mean.
From the style it sure looks as tough it could be from the Dutch Republic.

On the edge are there any openings?
Else it looks like possibly a obsidional coin (Siege coin).
or also possibly a coin weight.

Thank you a lot for your answer
It really looks like an obsidonial coin, i'm thinking the same thing

here's some other photos of the 4 edges

I still have no idea