Nice find. Die cracks and die break. If the US Mint didn't replace the die soon after this coin was struck I'd like to see what the coins struck after this look like.
Thank you! I found something about that. http://cuds-on-coins.com/sacagawea-dollar-retained-cuds-1979-2008/
Well, Meow would think not too much. If it was uncirculated it would be a lot more. $20 maybe? Meow is not sure, as Meow finds them, not buys them. No matter the value, it is a really good piece any CRH would be thrilled to find.