A George III Scottish mounted ram's horn snuff mull

A George III Scottish mounted ram's horn snuff mull, the hinged cover inset with an oval Cornelian panel within a bright-cut border inscribed "Presented to W. R. Mancer Jr by Alexander Wilkie, Edinburgh May 1925" the rim inscribed "William Macpherson Esq to John Charles Stuart 1802", unmarked c.1802, 4.5in (12.5cm) long