Original U.S. Vietnam War Era M68 Claymore Mine Training Kit with Canvas Carry Bag - Inert 81mm Mortar so there is no date

so there is no date visible there

There is also a bit of sticky material on the back

The wounded couldn’t ride the tanks back

as had been the case with similar US attempts to rifle percussion altered flintlock muskets

and it still bears the original markings clearly on the underside of the barrel assembly:-

Original U.S. Vietnam War Era M68 Claymore Mine Training Kit with Canvas Carry Bag - Inert 81mm Mortar so there is no dateOriginal Items: One Set Only. The M68 kit was designed to familiarize personnel with the placement and arming of a real M18 Claymore directional mine. It comes with all the components of a real Claymore kit packed in an M7 bandoleer. The plastic M33 Inert AP Mine is the inert training and practice version of the M18 Claymore. Some inert mines were green with a light blue band, while others were completely blue. It does not contain an explosive or