A group of seven buttons all featuring steel, sizes ranging from dimi to 15/16 inch including four NBS small and two NBS medium. The medium flat steel features a Greek key border. The oval is set on brass with a mother of pearl center surrounded by faceted riveted cut steels. The bow is silvered brass set in a steel cup. There is a three-material BLUE composition inlaid with a shell center and a steel cog, pretty unusual.