Photo taken on Sept. 26, 2016 shows a pen made with a bullet shell, which is named by Colombian President Juan Manuel Santos as "baligrafo" (bullet-pens) for signing the final peace agreement between the Colombian government and the Revolutionary Armed Forces of Colombia (FARC), in Cartagena de Indias, Colombia. Colombian President Juan Manuel Santos and the rebel group's top leader Timoleon Jimenez signed a historic peace deal on Monday afternoon in the city of Cartagena, ending a 52-year conflict. (Xinhua/COLPRENSA)