Sacagawea question

I have two Sacs with the same grade. The 2000-P appears to have a satin finish while the 2002-P is much more brilliant and reflective. My question is why is there a difference?
2000-P

2002-P
2000-P

2002-P

0
Comments
We'll use our hands and hearts and if we must we'll use our heads.
Carl,
It doesn't seem to be related to die age, because several of the early-strike Sacs (good, deep, clean strikes) I've had were satin/matte. I think it is more about die maintenance or modification. I've gotten same year, same mint dollars that were brilliant and others that are matte. I think it is largely a function of planchet quality and maintained dies. Matte good strikes tend to hide rub better and tend to grade higher when there aren't monster hits or die clogs.
<< <i>I care, Marty. I've never known you to be so harsh? >>
Why?, Until the US Government get rid of the one dollar bill, dollar coins are a big waste! I hate to say it, but it's true. The dollar bill and the Lincoln cent should just go away! Personally I like the idea of a one dollar coin, it's small, it's a different color than a quarter. But the US Mint has warehouses filled with SACs and Kennedys. Why, because the people here won't give up the dollar bill! Until that happends, the Crapagawea is a waste of taxpayers money!
Whew, I feel better now!
"Senorita HepKitty"
"I want a real cool Kitty from Hepcat City, to stay in step with me" - Bill Carter
"Senorita HepKitty"
"I want a real cool Kitty from Hepcat City, to stay in step with me" - Bill Carter
We'll use our hands and hearts and if we must we'll use our heads.
I have actually noticed at least 3 different finishes on these-a fine grained matte; a coarser grained matte;
and the semi-prooflike finish. All three exist for both Mints. Whether this is caused by die preparation or what, I don't know. I have a feeling most of the semi-prooflike ones are caused by die clashing and susequent die polishing, as with other coins.