The bad news: Hate to inform you but those are not "Goodacres Presentation" coins. She was the designer of the obverse on the coin and when paid for her services, she was given $5000 in Sacagaweas. She then submitted all of them to ICG for grading and encapsulation. So in escense, all of them would be encapsualted. The coins themselves do not have any design differences. Many of them have been submitted to PCGS for cross grading and encapsulation. A total of 769 to date. The good news: If they have 12 tail feathers then you would have what is know as the "Cherrios" dollars, they were placed in a box of Cheerios as a promotion of the new dollar coin. Hope this helps P.S. remember is helps to provide a photo.
Sorry about that I forgot the links photo, here's the link, http://marblegraniteslabs.com/coins/2000p.htm
Having looked at the photos, unfortunatly they are of the common variety. The "Cheerios" promotional Sacagawea Dollars will display very prominent and defined veins in the eagle’s tail feathers, something that is not even seen on proof or mint state Sacagawea dollar coins. Also if one looks close the central feather displays a raised vertical shaft in between the veins of the eagle’s tail feathers. The above is the same for the "Goodacre Presentation" special strike. Hope this helps. P.S. I should have mentioned the prominent tail feathers instead of just 12 feathers.
What does the back of a goodacre coin look like. i have started with trying to find the prices of a coin collection of mine. i am stumped on this Sacajawea dollar. on the back of it is an eagle and 17 stars. i know that one of the other designs has 5 Indian arrows bound together representing the Iroquois confederacy. And the other design that i know of has an Indian women planting corn squash or other plants. i am unsure of which is the goodacre. all that i have looked online for show what i have.