ANTIQUE ADOLPHE FRONTIN STERLING SILVER GOLD FRENCH NIELLO CIGARETTE CASE FRANCE

Description

ANTIQUE ADOLPHE FRONTIN STERLING SILVER FRENCH NIELLO CIGARETTE CASE FRANCE WITH GOLD PLAQUE WITH ENGRAVED INITIALS
Hallmarked with Frontin but I can't find the french silver hallmark.Small dent in one orner as shown in pictures.
Size... 3 3/8" x 2 5/8" aprox