The Illinois Watch Co. was an American watch company that was active from the late 19th century to the mid-20th century. It was known for producing high-quality pocket watches, many of which were sold to railroad companies for use by their employees. Illinois pocket watches are highly sought after by collectors and enthusiasts, and are considered some of the best-made American pocket watches of their era. This particular Illinois Watch Co. gents pocket watch is made of 14K white gold. It houses a manual movement, 21 Jewels, grade 538, 3868487. The 13S size case (40.64mm diameter) features a silver gilt dial with gold Arabic numerals hour markers and a small seconds sub-dial. This is one of 1,000 pieces made that year.