A complex formation consisting of a ring containing a 'clutch plate' design of seven smaller circles interspersed with 75 grapeshot circles within the inner design.   

A complex formation consisting of a ring containing a 'clutch plate' design of seven smaller circles interspersed with 75 grapeshot circles within the inner design.   (photo 2)

A complex formation consisting of a ring containing a 'clutch plate' design of seven smaller circles interspersed with 75 grapeshot circles within the inner design.   (photo 3)