An English teacher from Warwickshire is among the members of the public who designed the flip sides of 50p coins to mark the London 2012 Olympic Games.
A series of sporting images reflecting 29 Olympic and Paralympic sports including swimming, boxing, gymnastics, boccia and goalball, make up the coins' new look.
Thomas Babbage, a 30-year-old English teacher from Shipston-on-Stour, Warwickshire, was among the winners picked from nearly 30,000 entries in a Royal Mint public competition.
Mr Babbage, who designed the equestrian coin, was living in Austria when he heard of the competition.
He was travelling through South America when his father called to inform him he had won. He said: "After knowing I had been in the running for a long time it was almost surreal to know I had won."
The winners share the honour of seeing their designs come into circulation in 2010 and 2011 and also knowing that, like every UK coin in general use, it has approval from the Queen and the Treasury.
A panel of independent experts and representatives from Royal Mint, London 2012 and the International Olympic Committee picked the winning designs.
London 2012 chairman Lord Coe said: "Coins are a part of the fabric of our daily life, so to have a range of coins designed specifically to celebrate London 2012 is a huge honour, made all the more special by the fact that members of the public have designed them.
"The 50ps will be part of a long-lasting, wide-reaching cultural legacy that will benefit the entire nation and I'm looking forward to finding the first one in my change and collecting the entire range."
It is the first time in the Royal Mint's 1,100-year history that the general public has designed a series of coins for nationwide circulation.
The London 2012 coins will also be the Royal Mint's biggest joint release of designs on coins for general use. Since its introduction 41 years ago when decimalisation was established, only 16 designs have featured on the nation's 50p.
Dave Knight, the Royal Mint's director of commemorative coin, said: "Every one of our 29 winners is making history. Their coins will become treasured mementoes of the biggest sporting event to happen on UK shores in a generation, and will be around for generations to come. Every coin captures the spirit, excitement and passion of the Olympic and Paralympic Games."