Bowl Back Decoration

[Traintime]

A small spoon (appx. 13.5 cm, or 5.25 inches) of unknown origin or quality. Resembling coin work and bearing some tarnish to suggest silver presence. A script "M" initial engraved on reverse, but not well placed. (Somewhere there was an older thread relating to bowl back design samples..haven't located it again.) This appears to be middle-east (or related islands) in style origins, but don't believe we can immediately rule out European influences. Any thoughts on what it might be?