Like Spruett said, broken posts in mint marks aren't that uncommon. I'm intrigued by the other die chips on your coin though. Can you try to get a sharper picture? Ideally, zoomed in from the top rim to Roosevelt's chin. It could be the lighting, but I think I see a die chip on his cheek too. There's an out of place line on his forehead that could be a die crack or a scratch. If it's a die crack that connects the die chips and reaches the rim, then you've found a "Spike Head" that can be catalogued by Cuds on Coins. I don't see one catalogued for 1989; more info here: http://cuds-on-coins.com/roosevelt-...946-present/
























