An antique Prisoner of War double snuff shoe box with a hinged lid, heart, and diamond bone inlay on the lid and toes.
This double snuff shoe was probably made as a wedding gift or love token. 
 
Several of these types of snuff shoes were made at Sissinghurst Castle, where up to 3,000 French prisoners were incarcerated during the Seven Years' War (1756-63). The prisoners, imprisoned seamen, wrote home to their families, referring to Sissinghurst as Chateau de Sissinghurst; the name stuck.