A rare Staffordshire enamel patch box in the form of a faux montre c.1770-80

A rare Staffordshire enamel patch box in the form of a faux montre c.1770-80, the glass fronted cover opening to reveal an enamel clock face with two movable metal hands, the face opening to reveal a compartment behind with steel mirror, the reverse with a chequered design in blue, white and gilt, fitted with a metal suspension hook, 4.2cm.