The 5-Inch 40 Caliber Mark 2 Gun of USS Olympia

5-Inch BLR Mark II Number 79 was manufactured at the Washington Navy Yard in 1904. As the single 5-Inch 40 Caliber gun now aboard the Protected Cruiser Olympia, it represents the gun deck battery of ten 5"/40s that USS Olympia carried at the time of the Battle of Manilla Bay.