Naval Special Warfare Group Three. Per Mare Per Terras. Condition: Used, but in nice shape. This coin is 1 5/8 inches in diameter. Naval Special Warfare Group 3 (NSWG-3), based at the Naval Amphibious Base Coronado. Is one of six constituent formations of the United States Naval Special Warfare Command. Teams: SDVT-1 in Pearl Harbor. And SDVT-2 in Little Creek. In 2008, SDVT-2 was disestablished and merged into SDVT-1, which is now headquartered in San Diego. And operates detachments in Pearl Harbor and Little Creek. An SDV platoon consists of 12-15 SEALs. Never personally given any of the coins. All coins are guaranteed to be in excellent condition unless otherwise specified above. The free listing tool. The item “Naval Special Warfare Grp Three Per Mare Per Terras Navy Challenge Coin / 3 SEAL” is in sale since Saturday, September 20, 2014. This item is in the category “Collectibles\Militaria\1992-2001\Original Period Items”. The seller is “rolyat11″ and is located in Panama City, Florida. This item can be shipped worldwide.