Flask - Pewter

Antique pewter hip flask/travel bottle, rectangular in shape with chamfered corners, fitted with its original screw cap featuring a distinctive grip ring.
The front bears an engraved inscription with the initials “M.S.”, presumably referring to the original owner of the piece.
The base features an engraved/punched mark depicting a floral motif and a crown, which has not been positively identified. The mark may be associated with the tradition of British pewter manufacturers.
The object has a beautiful aged patina, with signs of use and oxidation consistent with its age.
It shows the usual scratches, abrasions, and signs of age.