Manufactured in France c.1877 on to the late 19th century, designed by Charles Ragon de Bange. 155mm single shot breech loaded, rifled barrel. Designed following the Franco-Prussian war, this cannon used the revolutionary de Bange gas seal system using a grease-soaked asbestos patch compressed by the firing process to seal the breech.
Although obsolete and mostly a fortress gun by World War 1, the Mle 1877 still saw use during the conflict because of course it did.