Browse All : Six+plaques+in+fitted+wood+box+a%29+design+drawn+on+copper+ground+in+red%3B+b%29+silver+wires+attached+to+ground%3B+c%29+enamel+partially+filled+in%3B+d%29+more+enamel+filled+in+%3B+e%29+enamel+over-filled+so+wires+are+submerged%3B+f%29+final+product+stoned+and+polished+to+mir from 19th+century and 1800