This ringslot parachute was made by Mills Manufacturing, who specialize in military parachute systems. Stamped 1970. Chutes have the lines and loops cut when demilled by the military, but this one is still attached to (what looks like) part of a harness. No (noticeable) patching along the canopy. A good get for a collector or someone who could repurpose it.
Not tested and no way to tell if it's airworthy. It is not being sold as a recreational or functional item.