This listing is for a very nice United States Navy Explosive Ordnance Disposal EOD Mobile Unit Five (5) Guam Chief Petty Officer CPO Mess Challenge Coin. This coin is 1 1/2″ x 2 1/2″. 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.