Hi there , I'm new to the site. I recently came across a pair of 20mm mk bullets that look pretty old and I had some questions. I found these buried under a bunch of clocks in an old box wrapped in newspaper. I'm not sure if they are dangerous are not but 1 of them looks live to me. I wanted to know how to handle them and if they are live or not. Of the 2 one has a hole in it and the other does not. They are about 7 inches in length. Where are these from? Are these collectible? I'm pretty sure they are from either different countries or makers. One has marking on bottom of the shell the other doesnt also the tips are different color. Any info would help thanks.