First, a city can become a 1-IFC only if its national currency is an IVC. But, as London’s status shows, a longtime 1-IFC can retain its position in the international financial system even if its currency is no longer an IVC.
金融史可以帮助回答这些问题。首先，一个城市只有在所在国货币成为IVC时才可能成为1-IFC。但是，正如伦敦的地位所表明的，即使所在国货币已不再是IVC，老牌1-IFC仍可以保有其在国际金融体系中的地位。