went thru some of my pocket change and found some interesting things i need answered

[the one and only]

all of these are what i believe may be errors but im not sure. nothing major...just minor errors if anything at all.







not sure what this one is....



here is number 2.

double rim?


here is number 3
what i believe is a lamination. on the letter D







here is number4
interesting nickel...has colored spots on it. on both sides




here is number 5
another believed double rim


here is number 6
different colored area on top of cliff. looks like a ghost. improper allow mix?


here is number 7
why is the P mint on the bottom coin smaller?

[the one and only]

here is number 8

blind die crack?



here is number 9
believe pressed thru grease. "united" is weak



here is number 10

mis aligned mint mark?


another

[diamond]

Next time please submit your coins one at a time for consideration. These bulk offerings are slow to load and awkward to respond to. Anyway...

1. Looks like clash marks.
2. Finning of the rim due to excessive striking pressure.
3. Looks like post-strike damage.
4. Discolored. Impossible to say whether it occurred inside or outside the Mint.
5. Finning of the rim.
6. Photo too blurry to tell.
7. Size of photo too small and resolution too poor to make a determination.
8. Could be a blind-ended die crack. But photo is inadequate.
9. Probably grease, as you say.
10. Tilted mintmark. Unsteady hands by the guy weilding the punch.