2005-P Kansas Quarter Bison Hump Error?

Is this the extra hump quarter or what is this thing..?

 

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It looks to me to be the precursor to a die break. What happens is that a sub-surface fault forms and the separation between the two layers of coin metal cause a slight indentation on the coin. Eventually, it breaks away creating the die break.

I've seen these before on CA SQ's. ~ Chris

 

Chris' explanation is correct.

 

So by that explanation this is possibly one of the first earlier errors of the bison humpback quarter? Because I've now found some similar spots to my coin. Only mine doesn't have the tuft.

This is another coin

 

Very common on these quarters.

 

First, I want it understood that I do not consider this an error. I don't consider my CA SQ an error either. These coins are simply the result of an overused or improperly annealed die.
I call my specimen "Condor Doo-Doo" because it was the largest die break that I found in the $250 bags of CA SQ's that I searched. Sure, some people like to give them catchy names to sell them. Me? I have no intention of selling it, but that damned bird was crapping (other die breaks) all over both sides of these quarters. ~ Chris

 

Your coin seems to match the curves of the mountain though. Mine are more dots.

 

There's all kinds of issues with these quarters, die chips, die cracks, struck thru's, etc.. Here's another one..