Well, it's obviously a defective planchet -- it's a Zincoln, and copper-coated zinc planchets are defective by design and intent. As for this specific issue, I'll agree that it's interesting, and watch for input from the experts!
Curious. Do you know or are you asking? (Really just wrote that because I want to follow this thread).
Found this on Heritage but was under impression that zinc coins couldn't have lamanation errors. IDK???
Here is a 1984 example from my collection.. Good thought. I thought the same about the Cent in question.. @Pete Apple should take a look at the coin.
Whilst fiddling the other year I would heat up coins then throw them in dry ice shavings. Interesting results ... especially the zincolns.
Mornin' - It's a very nice cracked die/die chip. I wouldn't call it a shattered die at this point; maybe another 10,000 strikes or so (lol) I've had two similar, but not this progressed, die cracks on a 2017 cent. A die like this would shatter fairly soon, I'd think.