機構的首字母,拼製成易於辨認的代號或標識。據悉,花押字最早出現於公元前350年的硬幣之上 维基共享资源上的相关多媒体资源:花押字 HenryNoelHumphreys, The Coin Collector's Manual, Or Guide to Numismatic Student in the
378–396 1854. The full text (页面存档备份,存于互联网档案馆) 鱗翅目 With HenryNoelHumphreys(英语:HenryNoelHumphreys) British Moths and Their Transformations. London: William
Humphreys, HenryNoel. The Coin Collector's Manual, Or Guide to the Numismatic Student in the Formation of a Cabinet of Coins 1. 亨利·喬治·博恩(英语:Henry George