I don't think the coin comes from the Habsburg Netherlands. Sap is right about the time range: late middle ages.
I looked through Vanhoudt's Atlas of the Belgian coins from Celts until now and I found the figure of a saint holding a shield is used on gold coins in the Habsburg Netherlands during the reigns of Philip the Fair and Charles V. I didn't find any silver coinage displaying this figure (with the exception of 2 coins, where the shield displays a climbing lion)
I looked through Vanhoudt's Atlas of the Belgian coins from Celts until now and I found the figure of a saint holding a shield is used on gold coins in the Habsburg Netherlands during the reigns of Philip the Fair and Charles V. I didn't find any silver coinage displaying this figure (with the exception of 2 coins, where the shield displays a climbing lion)



















