This might be one of them rinse coins. Has the factory optional woody grain. And the rims are freakishly wide touching the bust, some other edited dollar for comparison. No inside bevel but the outer bevel is factory. Doesn't look as if the devices are worn to cause the rim to do that, just look at the mint mark, the proudest thing on the obverse!
Here is a link for rinse http://www.coinfacts.com/silver_dollars/sacagawea_dollars/2001p_sac_dollar_experimental_rinse.htm
No offense intended, but what was the proper term for a female native american then? Was it dependent on marital status or something? (I am not going to google it just to argue off the topic of the coin here) Even Louis and Clark Spelt Sacagawea at least 4 different ways in their journals, and I can hardly pronounce any of them. And this site's spell check flags the cut and paste of Sacagawea from coin facts. That is what I call it, no disrespect to anyone. BTW my female native american friends like being called that, so ... lets talk about the coin instead, K?
I hit like for his reply..I did care..ok back to the coin..You got me curious at what the rinse agent would actually be. I have looked on the web and can't find any mention of it. I have seen prices of $60-$500 for certified sacageweas of this type.
if your dollar coin has been in circulation and it looks like it has you can forget about it being one of the experimental rinse coins. in just a few days of being circulated the experimental rinse would wear off. all coins will tone to many different colors if they are in circulation and being exposed to different things.
I'd be interested to know what this is as well: "They were also treated with an antioxidant to help preserve their appearance." from: http://www.smalldollars.com/dollar/page24.html