A rare Victorian embossed 'castletop' card case

A rare Victorian embossed 'castletop' card case, with a view of Buckingham Palace and The Marble Arch*, in the foreground of St James Park and swans in the lake, in high relief, flanked by chased scrollwork, the reverse chase with floral scroll around a vacant cartouche, by Nathaniel Mills, Birmingham (fitted case), 4in (10cm) high, 2.25oz. *Marble Arch was moved to its present position in 1851.