Vintage Solid copper nameplate J. G. Rajczak

Vintage 4 pound 1oz Solid copper nameplate J. G. Rajczak. This is HEAVY. Weighing in at 4 pounds 1 ounces of solid copper. This measures 21.75" inches long by 4.5" inches wide. 3/16" thick. This is in very good condition. No cracks. It does some very fine nicks around the outer edges of the sign. This is tarnished, and you can see where I did a little cleaning on the backside of this plaque so I could see what it is made of. A magnet will not stick to it either. This is at least 40 years old.