This page shows the different variations of the Tarcza rycerza from an Icons8 icon pack. Feel free to resize and recolor the icon, and then download the icon in PNG format for free. Icons are available in PNG and vector.
There is a single shield, with an only slightly curved top as opposed to the more curvy ones. In the middle of the shield there is two diagonal lines, cutting it in half, and on each half there is one diamond shape.