I agree that better pics might help a little, but it really does not look like a die crack to me. Rather, it looks like someone ran a sharp point along a ruler. This scratch is almost straight, with the one exception being where that point "bounced" off of the shoulder of the number 0 in the date. It looks to me like there is extra metal piled up on one side of the cut mark.
"If you climb a good tree, you get a push."
-----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz