While doing research on some of the notgeld bills I collect I soon realized that many of the bills (more the bill than the coins) were often printed but never circulated as currency. Within the bounds of the city or town they were printed in, most were issued with a denomination and most would have been usable as circulation currency, but they werent. Why werent they? because as soon as they appeared on the scene they became collectors items. I have notgeld dedicated to the collection of notgeld, I have a notgeld album, issued contemporary to the issuance of notgeld for the storage of collected bills. So it is obvious that while these bill were being issued, they had already become collectors items and people would collect and buy these notgeld albums to store them in. Bills, like with the coins, you get both types...I have examples of heavily circulated notgeld bills and coins...so there is no doubt that many were used. But it seems that collecting these notes became very popular at the time. In fact...the collection of these bills were so popular in Germany (and later around the world) that this time period is referred to what one might call the golden age or the real dawn of the practice of collecting bank notes. Now I am not saying that Notaphilia started at this time, but never before had SO MANY people taken interest in collecting bank notes, and those people would go on to broaden their interests in later years, once the hard times lifted...and even pass the interest along to new generations. There is such a wide variety of notgeld with such a wide gamut of themes, one could collect banknotes from just Germany and still easily fill a whole Notgeld Album, never collecting anything but german emergency issues. Many of these issues are called 'serienscheine' or Series Notes. Notes printed primarily to be collected and as a way for poor and decimated towns and cities to generate a bit of revenue. The themes and quality of art work on these bills vary widely from simple cartoons to wonderful works of art, scenery, sociopolitical themes, illustrated stories, you name it, it was probably put on a notgeld bill...these bills, when you translate them (some are hard because they are printed in local dialects) they often have funny little sayings, some are down right frightening with anti Semitic messages on them (showing the state of mind of the German people even this early regarding this issue), again...the subject of what is printed on them both image and inscriptions touches on all aspects of the life and times.. So, while the systematic collection of banknotes, or what would be known as notaphilia, didnt not begin during this time as certainly there were probably already some people in the world who had thought of collecting bills. At this time, the number of bank note collectors skyrocketed, it became a popular passtime in Germany, then Europe, and then the world as the practice of collecting, saving, and preserving bills spread and what was collected expanded from notgeld to all forms of paper currency. Collecting bills was never so popular and possibly has never been as popular as it was in Germany at this time. A few examples out just to illustrate, mind you I have many many many more that are very interesting...and I only have a small fraction...its hard to just pick a small example because so many of them are so interesting: I also have a notgeld album from the time...I just havent taken a photo of it yet.