I recently bought a sign that is in the shape of a pocket watch. It has the markings CWT Co. Modern on it, which I believe is the Chicago Watch Tool Company. I was told the sign hung on the main street of a small town in South Dakota around 1910. The sign is made of cast and has curved glass faces with a painted time of 8:17 -. It has two bulbs on the inside to light it up. I am having trouble finding any info on this .. HELP