This is a very interesting and rare piece. The obverse is listed in DeWitt 1868-18 although the reverse of that has text whereas the reverse of this is listed in DeWitt as Colfax 1868-1 but again that piece has text on the reverse. The item is 1.25" diameter and 1/8" thick or .25" thick if the high relief portraits are included in the measurements. There is a single tiny hole as issued on the top edge and likely the piece was once suspended from an embossed eagle hanger. What we find most interesting is the material from which it is made which DeWitt describes as composition. The material is actually celluloid which is considered the first thermoplastic. Its first creation was in 1856 under the name Parkesine. It was not until 1870 that the name Celluloid was registered. On the Grant side a tiny and shallow 1/16" flake is off the extreme rim edge at the right while on the Colfax and even smaller tiny flake is off the rim edge at 2 o'clock. The pure white images in high relief and the lettering of each name which is in lesser relief all display against a deep purple background. Although not the first use of this material an extremely early and rare example of what became known as Celluloid. Don & Mildred Wright Collection.