Just having a hard time with your pictures. It takes practice. I think I get your point though. Bottom-line: these types of die crack are fairly common. But still a good find! You're looking in the right place for the right things.
You can always start a new thread. You could create one with the same subject line or one of your own.
That's one of the 1st die cracks I've seen on a zincoid cent , as they're usually so corroded I can't see them .