Barrel of the French heavy field (siege) cannon named "Le Brise Murs" – a 24-pounder cast 1757 in Strasbourg, captured (with the second, matching barrel) by the Prussians 1870/71, kept in Silesia until 1957, now on display in the Polish Army Museum, Warsaw. Cal. 153 mm, wt. 5666 lbs., firing range up to 1500 mts.