Akhir 12, 1432 H/March 17, 2011, SPA -- Britain on Thursday launched a commemorative coin worth 5 pounds (8 dollars) to mark the forthcoming wedding between Prince William and Kate Middleton, according to dpa. The coins, ranging from standard to silver, gold and platinum, show the couple facing each other in a double profile, an image described by the Royal Mint as being "unusual" in British coinage. They have the familiar image of Queen Elizabeth II on the reverse. The Royal Mint said it expected to sell more than 250,000 coins worldwide. A statement stressed that the design by sculptor Mark Richards had received the couple's "full approval." Buyers and collectors can choose between the standard edition, which will set them back 9.99 pounds, silver proof for 55 pounds per piece, gold plated for 85 pounds, gold proof for 1,550 pounds and platinum for 5,450 pounds.