BTW… A JAPANESE GREAT SPEAR… The NIHONGO was passed over times and places… from EMPEROR MASATIAKI to SHOGUN ASHIKAGA YOSHIAKI to DAIMYO ODA NOBUNAGA to D. TOYOTOMI HIDEYOSHI to D. FUKUSHIMA MASANARI… Who then LOST THIS GREAT SPEAR… IN A DRINKING BET… to MORI TAHEI… and ON to THE FUKUOKA CITY MUSEUM,.. Where it is Displayed. This TALE of Owners… is RETOLD in the SONG KURODABUSHI. LEGEND. NIHONGO measured some 7-10 ft. dependent on sections used. BLADE LENGTH app.80cm.