
In addition to the staining, if you are referring to the stylized GG initials at the bottom of the obverse, that should be found on all
Sacagawea dollars. The initials G G stand for Glenda Goodacre, the sculptor who designed coin. She passed away a few months ago at the age of 80.
https://en.wikipedia.org/wiki/Glenna_Goodacre
ANA ID: 3203813 - CONECA ID: N-5637 Clean a coin that may be worth collecting? Please DON'T! When in doubt, leave it dirty!!
