Or …Mother of all Navaja…. One of the biggest Navaja knife we have ever seen: More than 68 inches long (173 cm) fully opened. Taller than an average person. 35 inches in closed position. It is shown below next to a “normal” size 12 ˝ inches Navaja knife. The blade is engraved and inscribed in Spanish, painted red and dated 1878. The handle is bone and brass sectors decorated with round inserts of small glass mirrors. Very good condition. A rare and outstanding item.