Possibly an Army button? Domed. Smooth edge. Smooth background. Post-1901 crown which sits on a circular border with writing on it. Within the circle is a shield divided into quarters with a device in each. Underneath the circle is a motto 'Dieu et mon Droit'. On the left-hand side of the circle is a lion, on the right-hand side is a unicorn. On top of the crown is an animal standing on all fours. Possibly a royal crest. Similar to UNI6762.