This listing is for a very nice RARE United States Navy Chief Petty Officer CPO Security Forces NAF Atsugi Japan Red Challenge Coin. This coin is 3 3/4″ and 1/4″ thick. It weighs 8 oz. The mask is magnetic and can be removed. This will make a nice addition to any collection. Any questions, please feel free to ask. I always strive to deliver prompt and accurate results. If you are dissatisfied for any reason, please let me know and I will do my best to resolve the issue to your satisfaction. Just add the items to your cart and request an invoice.