Mark of Matthew Boulton, Soho Plate Works, Birmingham.
Sham Marks stamped on Sheffield Plated Ware to simulate the Hall Marks on Silver Plate.
(Found on late Eighteenth-Century Hot Water Jug.)
Imitation Marks stamped on Sheffield Plated Ware to simulate Hall Marks on Silver Plate.
(Found on Salt Cellars in date about 1815.)
Marks on French Silver Plated Ware, Plaqué or Doublé, clearly showing that it is Plated, and not Silver Plate.