An 18th century silver-mounted glass scent bottle with a compartment,

An 18th century silver-mounted glass scent bottle with a compartment,
unmarked, possibly continental,
flattened baluster form, circular pull-off cover with ring attachment, to reveal a compartment, the reverse with a similar ring, hinged cover set with gold thread monogram under a clear cabochon, with a case, height 9.1cm.