This unique beer stein mug features the emblem of the Naval Post Graduate School's Trident Room. It is a perfect addition for collectors of militaria memorabilia and those interested in naval history. The mug is designed with high quality materials and craftsmanship, making it a durable and long-lasting piece for display or use. The origin and manufacturing of the mug is unknown, adding to its intrigue and value. A must-have for any collector or enthusiast.