I believe this piece is for decoration but it can be used for coffee the cups I am not sure if they are missing something or not they come as pictured and they can be used as egg stand for hard boiled eggs

This product is a small brass and copper Dallah coffee or tea pot with five cups, typical of Turkish and Ottoman Islamic culture. It is a collectible item that represents the Middle Eastern influence in design and craftsmanship. The Dallah is a traditional Middle Eastern coffee pot, known for its unique design and cultural significance. This piece is a representation of the rich cultural heritage of the Middle East, particularly in the traditional practices of coffee or tea preparation.