Documents at Mount Vernon indicate that Houdon had made the bust days before the life mask, which suggests the two would have differed more, because the bust would have been done freehand.

• 维农山收藏的文件指出，胡敦制作胸像的时间比活人面模早了几天，而因为胸像是徒手制作的，两者间应该有更多的差异。