Tank Round Penetrator (120MM M865) Value?

[crayj]

My post title is what I think that I have and I am not at all sure of the value.  I believe that it might be a target or training penetrator dart, it is 19 inches long and weighs

8Lb's. The tail fins a some sort of nonmagnetic alloy and hard enough to ring when you snap them.  2/3's of the body is magnetic, the top 1/3 lightly attracts a magnet

and has to be a different material than the bottom 2/3's, the tip of the dart looks like it has a joint.

Any coaching would be greatly appreciated.

cj

 

[crayj]

.... Also, the entire assembly has no markings at all.