距今4500年，苏美早王朝时期的铁制品：基什王权剑？！

Dagger
Kish
Iron, ivory, gold
Early Dynastic Period
Field Museum 236415
This elaborate dagger, made of exotic and costly materials, was useful only to demonstrate the wealth of its owner. Because the iron was cast long before the techniques of heating and forging were developed, it would have been too soft to be used, and the ivory handle would have fragmented upon any type of impact.
© The Field Museum and the Ashmolean Museum,
Joint Oxford-Field Museum Expedition.
放心，技术上失败，所以是软铁剑。但并不妨碍这是早王朝3期，铁制品的事实。
另外，个人不知百度百科资料是否严谨，“目前世界上出土的最古老冶炼铁器是土耳其（安纳托利亚）北部赫梯先民墓葬中出土的铜柄铁刃匕首，距今4500年（公元前2500年）。。”，那如此说来，基什这把王权剑，也是能争个第一或第二位置？

但话说回来，博物馆HP的操作很谜。同样自家网站，这里的介绍简介，则没有写上“Iron”。
为什么会自相矛盾呢？本人也不知。