Someone over at the world coin forum suggested I check here for ID help on these two. The second looks like a Italy Venice grosso but the square headed figures on the reverse have me stumped. It’s usually St. Mark and the ruling doge. The other one...no clue. Thanks!
First is Hungary, Bela III. He tried to make imitations of Byzantine and Islamic coins for his crusaders, but they mostly refused to use them. It's a popular but common type. Second I think is maybe from Bulgaria, imitating a Venetian issue as you suggested.
Got one of those as well; used to be concave, but was flattened. I need to properly attribute it, but with COVID19, I've been delayed a bit.