The coins can be ordered from the British Royal Mint, North American 
 Office, Box 772570, Woodside, NY 11370 or by calling (800) 221-1215. The 
 $100 24 gold proof coin weighs 15.98 grams and is slightly smaller then an 
 American half dollar.  It costs $495 U.S. and is limited to 2,000 pieces. 
  The silver $50 is silver dollar sized and sells for $49.50 U.S. 
 Production is set at 30,000 pieces.