“直刀”这一名称,在钱币收藏界一般统指刀形较为挺直的赵刀、中山刀、晋刀等刀形货币。直刀的种类并非十分庞杂,以铭文而言,就那么十多种。然而,它留给我们研究、探索的东西,从来就很丰富。笔者对直刀也不吝关注,偶有几点思考。一、“城白”刀铭文的思考“城白”刀(图1),是战国时期中山国的货币。这个论点一改原先“赵国直刀”论,在钱币学术界及收藏界得到公认。这个论点的确立,归功于一九七四年对中 “Straight knife ” the name of the coin collection community generally refers to the knife-shaped knife is relatively straight Zhao, Zhongshan knife, Jin knife and other knife-shaped currency. The type of straight knife is not very complex, in terms of inscriptions, so a dozen. However, what it has left us to study and explore has always been rich. I also sting straight knife attention, occasionally thinking. One, “Castle white ” sword inscription thinking “City White ” knife (Figure 1), is the Warring States Period Zhongshan currency. This argument changed the original “Zhao knife straight ” theory, in coin academia and collectors get recognized. The establishment of this argument can be attributed to the alignment in 1974