This listing is for a very nice RARE United States Navy Naval Medical Center Balboa San Diego, California NMCSD Chief Petty Officer CPO / MCPON Duane Bushey Challenge Coin. This coin is large at 4″ x 3 1/2″ and weighs 8.2 oz. 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.