Medieval silver coin ID (4) pls :)

silver, 17mm, 1.19gr, thanks :)

Cant help beyond this information but the shield is identical to the following and flanked by BP versus yours which looks like IB. Perhaps this will spark some recognition by an expert in these type coins.

N#34677

Thanks harryg :) 

I also "suspect" on N#34804 

and yes, I didn't find those initials anywhere