Elgin National Watch Co. Bay State Imperial Coin Silver Case. Estimated production year: 1879. Watch Weight: 164 grams. The crystal shows scratches. The back of the case has small indentations. There is a name etched on the inside of the case back. The case back doesn’t close tight. The watch crown winds. The second hand has some movement, but it stops after a short time. The watch needs to be serviced and repaired. See photos and video.