Coes tools exist within their own universe. Herb Page's documentation* of their history is a first rate testimony to what the brothers Coes accomplished.
*The Brothers COES and their Legacy of Wrenches, by Herbert E. Page with a foreword by Loring Coes III. Copyright 2004. Published by Sunset Mercantile Enterprises, 1030 W. 59th Street, Davenport, Iowa 52806, 563-386-2042, mroldwrench@mchsi.com