This 1943 with the missing number 4 is common in these steel cents. It is caused by a Struck Through Grease. They have been a few posts about this same Cent. Value.. about $1.00-$2.00. Nice Find! Like you asked "a plugged die" yes plugged with grease buildup!
They are steel planchets, with a zinc coating to keep them from rusting. Just like galvanized nails. Steel with a zinc coating to prevent rusting.
I refer to the Zincolns in the 82-forward cents because they are mostly zinc. On the 1943's I call them steelies as they are mostly steel.
Blatantly offensive arrogant avatar. Gradeschool bullying disguised as Inappropriate "humor". Who could think that is funny?
Your avatar (as well as your post quoted above) gives the impression that you think yourself smarter and better than everyone else. I agree with @EagleEyez. You may be amused, but I'm sure there are many more here that are not.
When you use derogatory terms to describe the developmentally disabled, or any other group of people, you reveal a lot about your own character. Your personal insult directed at me is not welcome.