Operated by the Illinois Watch Case Company. Incorporated Late 1910 by Charles J. Wendland, Walther Bachrach, and S. Sidney Steain.

According to the Novemeber 30, 1910 issue of The Jewelers' Ciruclar-Weekly, "The Elgin Giant Watch Case Co., recently incorporated in Springfield, Ill., is a subsidary concern of the Illinois watch Case Co. and was organized for selling in foreign countries only."