Silver Imperial Naval Presentation Cigarette Case

Silver cigarette case with silhouette of an Austrian U Boat , with dates 1914-16 (in black enamel), measures 9x5cm, weighs 93.5 grams, engraved inside Remenowsky H (?) and dated July 1916; case is hallmarked with Imperial Austrian hallmarks, along with maker mark of Alexander Sturm; undoubtedly presentation case given to senior Submarine Officer by his subordinates. In very fine condition and rare.