Three Scottish silverplate tartan brooches early 20th century One circular-form, engraved silver-plated brooch, centered by raised, faceted cairngorm stone; marked EPNS Dia. 2.375in. One Scottish silver tartan brooch, engraved circular form with three thistles and centered by raised faceted cairngorm stone, Dia. 2.5in. One Scottish silver tartan circular form brooch embossed with thistles in high relief, centered by raised faceted cairngorm stone. Dia.3.25in