A rare Birmingham enamel rectangular snuff box of Jacobite interest

A rare Birmingham enamel rectangular snuff box of Jacobite interest,

c.1760, the cover painted with an oval portrait of Bonnie Prince Charlie (Charles Edward Stuart), reserved on ground of flags and other military motifs, the sides with Classical ruins and Italianate landscapes, 9cm across.

The portrait on this box is after one by Sir Robert Strange. This box is particularly unusual in its brazen display of the Prince's likeness, since such portraits were designed to be small enough to conceal in order to protect the owner.