This vintage postcard depicts a mortar battery at Sandy Hook, New Jersey, in the early 1900s. The postcard is a topographical collectable and has been posted, adding to its historical value. The battery was part of the United States military defences and was in use during the pre-war era. The postcard is a great addition to any militaria collection and is a rare find for collectors of topographical postcards. The battery is located in New Jersey, United States, and is a piece of history that will fascinate anyone who sees it. Get your hands on this unique collectable today!