2014-D Die Error

It would be a very straight and vertical crack. It also has some strange texture to it (see last image)

The line goes from end to end

Coop: Interesting theory

I just found a fourth one. I have taken a picture of the same area on all four coins and lined them up in this GIF. If it was an ejection issue wouldn't there be a difference in texture? The GIF shows that the line is a pattern among all coins, which leads me to believe whatever it is, is on the die itself.

EDIT: It looks like the left portion is incluse and the right portion is very difficult to tell since it's textured, I'd say incluse as well. Since the pattern is the same on all four coins though it would suggest:
1) Something very thin stuck on the die that does not move each strike, leaving the same pattern on each coin.
2) Or the die itself was made with a raised line.

And no, I'm studying computer science ; ) Do my microscope pictures look like they are from medical equipment? It's just a cheap thing I picked up on ebay. The LED lighting is way too bright and causes distortion with images. It's decent to the eye but difficult to align with my phone for a good shot, I'll need to make a special mount or something for it. Right now I have to hold the scope in one hand and the phone in the other and angle the camera to where it can see in the scope, then tap the picture button without moving the camera

Could it be from a scratch on the hub that was used to make the die?

CoinMasters: I know you look through nickels, keep an eye out for this one and let me know if you ever find any.

I can't imagine mint inspectors not noticing this after the first inspection of a batch and rectifying it. I've also got another 2014 D error I'll post later. Seems quality control slipped a bit last year. I've got a whole box of 2014 D nickels that I was going to return to the bank, but after finding some anomalies in my area I'd better take a look at them

Thanks CoinMasters : ) Good luck
I try to branch out occasionally, I've picked up a few boxes of pennies. It's a trade off how you spend your time looking. With nickels there's errors + War Nickels with a smaller chance of finding a doubled die since it seems there are so few. Pennies there are wheats, errors, rpms, double dies, etc, but for some reason I can't stick to them for very long. I guess I love finding those War Nickels and I have a monopoly on nickels in my area. All the tellers let me know that other collectors pick up pennies but I'm the only one that gets nickels. ; )

Coop: Could they have realized the error and canceled all dies until they polished the line out and removed that specific hub from creating new dies? I'm unfamiliar with how the mint replaces dies, all at once or individually as they break down.

Also, I'll be posting my second 2014 D error in an hour.