Victorian English Mappin & Webb Folding Biscuit Box /Warmer, Silver Plate, Shell and Branch Design, circa 1900 This beautiful Antique English Folding Biscuit Box/Warmer is in a Shell and Branch Design that dates to circa 1900. The box is silver plate and opens to reveal two hinged pierced screens that cover gold washed bowls. The box is marked “Mappin & Webb’s and measures approximately 9-3/4 high x 8 wide x 6 inches deep. This biscuit box is in excellent antique condition (see photos).