From my vault. These steel buttons were made from late 1700’s thru early 1800’s by riveting small steel pieces onto a brass backing. Some cut steel buttons combined stamped and riveting processes. Originally they were thought of as a substitute for diamonds and marcasite. They must have sparkled in the candlelight of an evening gathering! Many survived but are prone to rust so finding a pair in this condition is rare. I have left the shank on the back as to preserve their collectibility.