I have this coin:
The seller stated it's this coin: https://en.numista.com/catalogue/pieces108298.html 1/2 bazaruco Portuguese Malacca Felipe III 1621-1640, which I didn't doubt, but the obverse seems off, and it seems to not be made of tin, but maybe copper.
I suspected it might otherwise be this coin, but it seems even more off: https://en.numista.com/catalogue/pieces49536.html
weight: 0.7g
diamtere: 11-12mm the long way, 8-9mm the short way
all help appreciated