Help Identfing a Makers Mark

Hello. Late last year I purcahsed an odd silver plated skull ring.It has a makers mark that I need help identifing. It is a crescent pointing downward with a star underneath with the bottom pointing down like you would see in a pentagram. I took pictures as well. What is also strange is the skull itself. It resembles the skull used by post First World War French far right veterans organization the Croix Du Feu. So it could be a French maker. I am unsure. More than anything I am just curious and would love to have any information. Thank you.

Take a sharp photo of the selected symbol. Do not take photos “handheld.” Place the object down.