A mid 19th century gold mounted glass double portrait perfume bottle, the gold hinged sprung cap, with push button, and applied with monogram and ducal coronet, the inside cap glazed and stamped with crown encircling ‘DILLER’, the heavy tear-drop shaped glass body inset with two oval glazed panels within gold frames, enclosing to the front a hand painted portrait of a lady, in white lace collar and stole, and to the reverse, a young boy and girl, both auburn haired, length 8.7cm. £600-£800

Thomas Diller (1828-1851) is credited with inventing the sprung cap mechanism.