The designer of the Euro coins is 'Luc Luycx', a computer engineer and medallist living in town of Dendermonde. He works for the Royal Mint of Belgium. He designed the coins in 1996 while participating in a contest organized by the European Union to design a new and modern looking Euro coin.
'Luc Luycx's' design was the chosen winner of the competition. If you look very closely you can spot his connected initials 'LL' on all numerical sides of euro coins.