ISO 4217 a subdivision of pound sterling, the currency for the United Kingdom. Recently, cryptocurrencies have unofficially used ISO codes on various cryptocurrency exchanges, for instance LTC for Litecoin, NMC for Namecoin and XRP for Ripple. SIX Interbank Clearing (a Maintenance Agency of ISO) is currently studying the impact and role of cryptocurrencies and other independent currencies on ISO 4217. A number of currencies were official ISO 4217 currency codes and currency names until their replacement by the euro or other currencies. The table below shows the ISO currency codes of former currencies and their common names (which do not always match
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