500 euro note supply of euro notes and to maintain their integrity throughout the euro area. The €500 banknote peaked at the end of March 2009 at 36.9% of the value of all Euro banknotes.Circulation by numbers of notes peaked at 613,559,542 banknotes in December 2015 when the decision to not include this denomination in the new Europa series was made. The lowest number of €500 banknotes in recent years is, 507,033,274 in February 2018. Besides the date of the introduction of the first set to January 2002, the publication of figures is more significant through the maximum number of banknotes raised each
Counterfeit banknote detection pen Counterfeit banknote detection pen A counterfeit banknote detection pen is a pen used to apply an iodine-based ink to banknotes in an attempt to determine their authenticity. Counterfeit banknote detection pens are used to detect counterfeit Swiss franc, euro and United States banknotes, amongst others. Typically, genuine banknotes are printed on paper based on cotton fibers and do not contain the starches that are reactive with iodine. When the pen is used to mark genuine bills, the mark is yellowish or colourless. Such pens are most effective against counterfeit notes printed on standard printer or photocopier paper. The chemical properties