The image shows three illustrations of a turtle's shell. The illustrations are drawn in a simple, hand-drawn style and are on a beige background. 

The first illustration on the left shows the back plate of the turtle, which is a rectangular shape with a flat top and a curved bottom. The shell is made up of small, irregularly shaped lines that create a grid-like pattern. The lines are evenly spaced and appear to be made of a light-colored material. The second illustration in the middle shows the same shell, but it is slightly larger than the third illustration. The third illustration shows the plastron of the tortoise, which has a more elongated shape and a more rounded top.

Below the illustrations, there is text in Chinese that translates to "Back plate of turtle" and "Plastron" in English. The text below the illustrations reads "Complete turtle carapace."