Those are great! Definitely original. I agree that they look medieval, which is fun. And yes I think arts & crafts when I see the hammered look. I could be wrong here but I know another similar house w/ original lighting and they have round bulbs. It's a pretty cool look IMO. They're also frosted, sort of a pink color I think, though I could be wrong about that.
I also think I've seen ones a little similar (reproductions) at rejuvenation house parts (.com)