Check the listing for details. Eternal Patrol Submarine Challenge Coin. Condition: New. Listed at 22.00 USD. This Eternal Patrol Submarine Challenge Coin is a rare and valuable addition to any militaria collection. With its original design and production in the United States, this coin reflects the country's rich history and military heritage. The coin's intricate details and high-quality materials make it a true collector's item. Whether you're a submarine enthusiast or simply appreciate unique and historical collectibles, this challenge coin is a must-have. Its originality and authenticity ensure its value, while its intricate design and quality make it a standout piece. Add it to your collection today and own a piece of American history. The front features the hull numbers of 66 lost U.S. submarines, with the Latin phrases "Semper Fortis" (Always Strong) and "Paratus Et Potens" (Ready and Able) along with the birth date of the Submarine Force on the border. The center features an anchor with "Silent Service" on the plaque and "In memory of those on Eternal Patrol" below it.The back features Poseidon and the Submarine Warfare pin with silver and gold fish to represent enlisted and officer personnel. The coin is 2.5" in diameter and is minted on brass with a brushed finish and enamel filling.