Brooches by Clare Hillerby Metalwork elements layered onto found postcard on an oxidised silver back sheet and covered with clear perspex. Features Primary Material : silver Other Materials : gold, perspex, postcard and stamp Pin Type : pin Dimensions (mm) : 50x63x5 One of a Kind : Yes Metal : yellow gold 18ct Hallmarked : No Cleaning InstructionsCarefully clean oxidised areas gently with warm water and a soft, old toothbrush, a little household cleaner can be used if necessary, avoiding paper areas. Papers are covered with perspex, to avoid scratching store it in its wrappings. They are not air tight so if water gets in, remove and leave to dry naturally. With all items, avoid contact with perfume, washing up detergents, hair products etc and store away from direct sunlight.