Hard to see, but two things. One, not a spike head as the line is not traveling to the rim. Second, doesn't look like a die crack, more like a cut. My guess is PMD. I could be wrong however, it's just what I'm getting from these images. So much glare, so it's difficult to tell.
"Life is like a box of chocolates, you never know what you're gonna get." - Forrest Gump