New coin to id...

Hello everyone, I got this coin and just can't find it in the Numista database...
Here's what I know:
Weight: 0.4 g
Diameter: 15-16mm
Metal: Billon??? very hard to tell no signs of any metal in particular...
Pictures above are made with different light effects... I was playing around to get a better image... hence 2 of each... but it is the same - just one coin... The opposite side from the Shield/Coat of Arms is also hard for me to tell which side is up... so I took 2 different pictures with 180 degrees rotation...
Thank you in advance for your help... :))

Countefeit of Polish shilling of Sigismund III Vasa, IMHO. Similar to https://allegro.pl/oferta/szelag-koronny-1626-bydgoszcz-piekny-egzemplarz-9572598544

Cita: "mti"I was playing around to get a better image...

​Next time, crop your pictures. It would make identification much easier (I mean in general, not this coin specifically).

Thank you guys for your replies... I will crop the pictures in the future... and the Polish Coat of Arms has a Cross in the center shield of the the larger shield... my coin has a horseman in the center and there is nowhere on the coin one can find/see the word "Solidus" - as suggested... even the counterfeit coin would have a similarity... so my hunch is that it is something else... and I think I've seen something similar before here on Numista Forum... but sorry can't remember when and what it was... :( Anyhow, I am still looking for your help to Id my coin... :))

Not gonna lie, the side without the coat of arms is super difficult to make out (as you already stated yourself)!
It does feel like it's from part of the Polish-Lithuanian Commonwealth in my opinion.

Something like this guy: https://en.numista.com/catalogue/pieces136393.html

A 3 Polker from the late 1500s / early 1600s. None of the pieces I landed on had a size noted, so it's difficult to tell for sure.
I could be wrong, but I believe each city-state had it's own coat of arms, so the shield would be a little different, depending on where exactly the coin was issued.

Thank you guys for your replies but I still think it is something else... There is clearly visible a reversed "N" and "O" along the edge in the legend on one of the sides... it looks more like an ornament of some sort of repeated "NO's"... who knows maybe it is, indeed, some sort of fake/play money... mimicking a medieval coin... lol... just guessing... there is nothing even close on Numista, at the moment... so I am still looking... =))