I just noticed that my most cherished
Sacagawea dollar coin has an error. I love this coin because it's a unique reverse, and most rolls of "golden dollars" that I receive have the Presidential series, and if not those, than 2000
Sacagawea dollars. Any help on determining if it might be worth something more than just $1?

Edit: I forgot to say what the error is, if anyone can't seem to pinpoint what it might be. It looks like the coin is off-center, and the bottom border is much wider than the top border.
My camera also is bad under low light, but works beautifully under natural sunlight. I'll post some more photos whenever I can get better light, but hopefully the one photo is enough! I can reply with more photos whenever I can get my lighting right :)