Original U.S. Vietnam War INERT 81mm Mortar M301A2 Illumination Round with Deactivated Fuse - Dated 1968 Technical Books These all were very popular

These all were very popular with German Officers

The top of the octagonal barrel still shows the original markings:

which is relatively simple and unadorned

most likely from a downed enemy airplane

Perkins-Cambell only made this holster during WW1

Original U.S. Vietnam War INERT 81mm Mortar M301A2 Illumination Round with Deactivated Fuse - Dated 1968 Technical Books These all were very popularOriginal Item: Only One Available. This is a totally inert deactivated example of the 81mm M301A3 Illumination Mortar Round. The device has no explosive filling or charges and cannot be converted to be an explosive device. This is completely inert and in compliance with BATF guidelines on inert ordnance. Not Available For Export. The 81 mm Mortar Illumination Round is used for the illumination of target areas during night missions or low visibility