There is a special edition in Xu Shichang commemorative coins, that is, a light-edged engraved edition with "Dr. C.Packard" engraved under the bead circle on the back. This version is usually considered to be designed for a specific VIP, and is used to engrave the name of the invited VIP on the surface of the coin. According to research, this moment is a small amount of commemorative coins specially cast to commemorate the opening ceremony of Peking Union Medical College, which was invested and donated by the Rockefeller family in the United States. Because the front pattern will be deformed when the names are engraved, only a few names are finally engraved, which makes this bare-edged engraved version the rarest version of Xu Shichang silver coins.