So I'm still working through these grease covered pennies I bought for a $1.00 a piece and I'm wondering if the copper experts can help me learn. I have a handful of decent dates in VF+ grades but I'm noticing that the high points on the devices have less brown on them if that makes sense.
What I'm trying to figure out is if this is normal wear since it is the high points or should I be seeing an even chocolate brown everywhere for coins this age?
Here are some pics as examples and, as always, I appreciate all the knowledge!
Coin 1 - 1911-D - Looking at the high points only... (looks like some kind of planchet metal mix issue from 'Liberty' up through his head?)


Coin 2 - 1916-S - This one is more obvious as most of the high points show a lighter color than the fields


Coin 3 - 1916-D - Just the extreme high points here and a little on the rims - also, would the dig and hit on the reverse be considered details, scratched or damaged?


Again, thanks for commenting, I am really trying to dig in a learn to train my eye to cleaning so I don't end up making mistakes down the road when good money is at stake. Also, comments on my pics? Any tips for improving?
Russ