An Encyclopaedia of Indian Archaeology v1.c8.s2.6

v1.c8.s2.6

The single copper-plate generally had a metal seal welded to it. When a record consisted of more than one plate, the plates were strung together with a copper ring (or rings) passed through holes, and the ends of the ring (or rings) were secured by soldering with a lump of metal over which the seal was impressed. An intact seal was proof that no plate had been removed or tampered with.