i will the book a glossary of the construction decoration and use of arms and armor by george cameron stone isbn shows records of back scabbards in chinese and korean armories and in some mongol weapons depictions as well however there is evidence in guy windsor swordsman companion that european and near east cultures never used a back scabbard at best it would be a baldric slung from a shoulder which was probably incorrectly drawn i have combined the information as best as i could to form a cohesive fit talk