Small double bottle (for perfume on one side and salts on the other) in two-tone 18k gold with guilloché decoration and laurel friezes

Small double bottle (for perfume on one side and salts on the other) in two-tone 18k gold with guilloché decoration and laurel friezes and cut crystal with canted sides, the lower part of the mounting monogrammed "M.N" (?)
XIXth century
Gross weight: approx. 62 gr.