Not to be confused with metal overlay inlays. Not sure who punched the inlays, as these are actual metal inlays as we know in clay composition... though I've never seen this before. Maybe somewhere in Europe; I don't know.

With these inlays, the same texture is on both surfaces of the metal. The verdigris example has been maintained with the other pieces for the past 24 years and very few; maybe 25 pieces, are this way. Probably a brass composition?