The very first commemorative 50p coin to enter circulation in 1973, commemorating Britain's accession to the European Economic Community (EEC).
 
Obverse: Arnold Machin Portrait
Reverse: Depicting a ring of nine hands joined together, representing the nine countries of the EEC (designed by David Wynne)
 
*This coin is no longer in general circulation and is heavier & thicker than standard 50p coins issued after 1997*