WW1 Royal Naval Division RND Artillery Sweetheart Brooch Pin Badge

Scarce sweetheart brooch, gilt brass and enamel. Pin original and fully functional, maker marked 'O.Ltd', In good condition with no damage to the enamel. Presumably this was for members of the Royal Marine Artillery serving as the RND divisional artillery. Circa 37mm tall. Superb.Comm MaFi