This is an interesting advertising piece and is made of solid brass with raised relief print. It measures about 2 1/2" x 2 1/2". It says "The Green Duck Company, Chicago, Ill". Below that is "World's Foremost Mfgs. Badges, Advertising Button's, Metal Advertising Novelties, Medals-Emblems" Bottom banner reads " Good Will Builders." It has a hole on the back of the clip to hang on the wall if you wish. I estimate it to be around 60-80 years old. :0) Thanks for stopping by.