The image shows a display case with four ancient artifacts on it. The artifacts appear to be made of clay or stone and are arranged in a triangular formation. 

On the left side of the display case, there is a large, rectangular object with a pointed top and a flat base. It has a carved design on the front and sides. On the right side, there are two smaller objects, one with a curved top and the other with a flat bottom.

In the center of the image, there appears to be a small, round object with an intricate pattern on its surface. The object has a smooth, polished surface and is likely a mortar or pestle. It is likely used for making the clay core (inner mold).

The background of the case is a plain white wall, and there is text on the bottom right corner that reads "Making the clay cores (inner mould)".