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15/02/1971 Britain launches decimal currency system

On Decimal Day, the United Kingdom and Ireland decimalized their currencies. The loss of value of the currency meant that the "old" penny, with the same diameter as the US half-dollar, was of relatively slight value, while the farthing, which was worth one-quarter of an old penny, was demonetized.


  • Essentials 

  • Decimal Day 

  • United Kingdom 

  • Republic of Ireland