Experimental rinse Sacagawea dollar

Looking for information to determine if my sac coin has experimental rinse or not,any help would be
gladly accepted.

 

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Perfect combination of light and shadow to not be able to see anything. :thumb:

 

Let me try some better pictures

 

Better pictures maybe

Hope these are better

 

I thought it was only done on 2001 Sac's .. not sure which for which mintmark

 

I found a website that said some were also in 2000

 

i don't know much about the particular coins your speak of. this one just looks like it has some toning, which can be common on sacs :thumb: hopefully some others will chime in

 

Photo really won't help, I think? The Mint tried the wash til 2003 with Sac . That is what Coin World had in it when Discovered I think?
:thumb:Google Mint Wash that will pin down the date.

 

This might help:

http://www.ebay.com/itm/MINT-ERROR-...40?pt=Coins_US_Individual&hash=item3381ab3fc4

OP coin looks like toning.

 

Thank you for all your input this is a great start to my researching this coin