Denomination (currency) Denomination (currency) Denomination is a proper description of a currency amount, usually for coins or banknotes. Denominations may also be used with other means of payment like gift cards. For example, "five euros" is the denomination of a five euro note. In a currency, there is usually a main unit (base), and a subunit that is a fraction of the main unit. In some countries, there are multiple levels of subunits. In the former Ottoman Empire, 1 lira = 100 kuruş = 4000 para = 12000 akçe. Today, only a few places have more than one subunit, notably the Jordanian
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