It is believed that people have been collecting paper money for as long as it has been in use. While people began collecting paper currency more systematically in the 1940s, the turning point occurred in the 1970s when notaphily was established as a separate area by collectors. The term was devised in this decade by a group of employees working for the collectors and investments firm Stanley Gibbons, in a successful attempt to formalize and encourage interest in the area.
At the same time, some developed countries such as the USA, Germany and France began publishing their respective national catalogs of paper money, which represented major points of reference literature.
In 1961, The International Bank Note Society (IBNS) was formed as an international association of banknote collectors. Nowadays it has thousands of members from around the world. The IBNS publishes the quarterly IBNS Journal, holds regular mail bid auctions, and promotes lectures at congresses.
The major contributor to this study has been Albert Pick who published some of the earliest catalogs of paper money and through them explained the objective of collecting paper money and the definition of it. Albert Pick is also the author of the capital part of the Standard Catalog of World Paper Money, now a three-volume set which consists of thousands of pages of almost the entire collection of the world paper money that has ever existed and is updated annually. Almost every note of every country and many special and regional issues are cataloged following a unique format for each entry: [Country Name]P[unique number for the banknote edition]
So, we have something like: Yugoslavia P-105.
A banknote from former Yugoslavia which is identified as Yugoslavia P-105
An important aspect of collecting banknotes is the condition of items. Banknotes in perfect condition (without any damage), that usually haven’t circulated are rated as uncirculated (UNC) and that is the highest classification for a value that a banknote can have. In addition to that, the value for a specific note in the world paper money catalog is listed for UNC condition.