This is a bronze sword dating to the Spring and Autumn period of the Eastern Zhou Dynasty of ancient China (circa 770-476 BCE). Swords of this type with a hollow, flared, round handle are somewhat common. What makes this piece particularly rare is the prominent midrib on the blade which is very uncommon on swords of this type. At the guard area, the midrib is 8.5mm wide and the blade at the same area is about 8mm thick. The total length of this sword is 43.5 cm and the weight is 408 grams. It is solid, stable and intact with some minor losses to the blade edge and to the handle in the area of the casting sprue. This is a fine example worthy of the best collection.