Arthur Price of England Sovereign Silver Plate. The very best and most luxurious silver plate cutlery on the market, with a silver thickness of up to 40 microns. Unconditionally guaranteed for life and will offer a richness of patination, in time, that is beyond compare. Dishwasher Safe. Kings is a direct descendant of an older pattern called Fiddle Thread and Shell. This practical adaption first appeared around 1817 and is still enormously popular today.