This is a king:
Which is Queen and Which is King
Depends, is this how the board is usually set up? If so, you can tell by the king being on the color of the opposing king-black king on a white square, white on a black square. If this isn't the case, I would generally say that the tall one is the king, I could be wrong though.
This is why the Staunton pattern is so good...
The goal of a chess set it to make it clear what the pieces are and not to be distracted by the "craftsmanship" of the maker...
So my answer is to put this set in a display and get a normal set that is not so confusing that you have to be in the internet asking what the pieces are...
The queen will look less like the bishops than the king does. The king, bishops, and pawns all represent men, so the pieces are all going to look similar. The queen should always be distinctively different since it is the only female on the board.