The Illinois Watch Case Company played a vital part in the success of Elgin Watches. While The Elgin Watch Factory led the country in making watches, it was the face, the hands and the internal workings (commonly referred to as the movement) that they manufactured. The watch case would be made by other companies and sold to jewelry stores. There, the customer would pick out which watch movement and which watch case they wished to buy. The jeweler would fit the movement into the case, a practice commonly referred to as casing the watch.

To learn more about this dynamic company, kindly proceed to the next postcard, "Eppenstein's Home"