The Harding item has high relief embossed lettering and is Hake #56. This has standard spring pin in reverse. The Cox item matches in design although metal background has a tiny textured pattern to it and the reverse has a tin back with a pair of brass ears extending to the left and right that would have allowed the piece to be fastened to some other object. As a pinback this is Hake #22 but this particular style is unlisted. Both have bright essentially Mint luster. Don & Mildred Wright Collection.