Board Thread:Speculation House/@comment-85.130.101.225-20130816112245/@comment-10380701-20141017225630

The more lower level Grimm are unlikely to break Crocea Mors. It looks like it has constant maintenance for an ancient weapon, as it literally has NO damage in it. Then again, Aura may be a factor of that.

However, the possibility of a colossal Grimm like a Goliath ramming Crocea Mors into pieces is possible.

But then again, this applies to all weapons. I'd only believe Crocea Mors is less durable than the other weapons if it looks like it's about to shatter to pieces right about now.

In fact, it should be MORE durable than Milo. As Milo is a foldable sword/spear (and a rifle, but that's not relevant here) and is hollow inside.