Arthur Price of England 25 Year Silver Plate Cutlery. The perfect range for anyone to enjoy. Silver plated up to 15 microns, and guaranteed for 25 years. This is top quality silver plate cutlery that will be the perfect centrepiece to any table, and a worthwhile investment and heirloom. Dishwasher Safe. Royal Pearl was first introduced in 1990 to celebrate H.R.H. Queen Elizabeth, The Queen Mother's 90th birthday and reflected her love of pearls.