I purchased this little trunk shaped box, as well as an octagonal one with dove by the same maker, from a dealer friend in Cambridge with one of the very best eyes I know. They both have the first-glance feeling of very sweet folk objects to me, almost with the feel of trench art pieces, but yet they're quite nicely crafted, and stamped with a maker's mark, MS, on the underside. Definitely with good age, earlyish 20th c. I would guess--and how nice a little treasure chest of a box to stash little treasures in. Another nice one to be a valentine I think, perhaps with a plane ticket rolled up inside! 

3 1/8" x 1 7/8" x 2 3/16" t and in very good condition. Pewter and brass I believe.