Wiktionary
shadow box
vb. (alternative form of shadow-box English)
Wikipedia
Shadow box
A shadow box is an enclosed glass-front case containing an object or objects presented in a thematic grouping with artistic or personal significance. The grouping of the objects and the depth effect created by their relative heights from the backing creates a dramatic visual result.
Usage examples of "shadow box".
Colt detective special mounted in a shadow box, next to the cover art from a sleazy true crime .
The fox stoles, the machete and rope, and the shadow box with the gun all fit in one box.