Our Marine CorpsChallenge Coin Displays are available in a wide variety of styles, from pentegon rotating challenge coin displays, step challenge coin displays, to glass cased wall coin holders. These are great gifts for the active duty Marine?or retiree. We can custom our displays for you, make a new size if you choose. Several Marine Corps challenge coin displays can be personalized with either laser engraving or by adding an engraving plate.