Could be a few reasons why it's only 2.8 grams instead of 3.1 or 3.2, but in any case, without a doubt, your photo is of a plated 1975-D Cent.
Not that anyone cares today, but that 1950-P BIE is one of the scarcer dates, imo
A much better than average example
Die Crack For some reason 2007 Dimes have lots of die cracks, split dies, etc.
Not finning - I can't tell if it's just extra schmootzem - hard to tell from the photo because that 'stuff' looks much lighter than the coins...
It's a 'hit' or small contact mark from the coin being in circulation.....that's it.
There is no other strike on or under that quarter, sorry. As mentioned, Numismatic Pareidolia -
In the general area of coins, Wide AM's, (for example) are called errors; collectors of them (and other varieties) call them Die Varieties, which...
Damaged, I'm sorry to say. The obverse has been 'machined'/beveled.
Damage from a counting machine. It's also called a 'sliced digit' - but it's not an error.....
V's
No - There's mechanical doubling on the reverse.
Looks like it could be 1. Rolled Thin planchet - check the weight, in grams or grains. 2. Weakly struck - is the reeded edge full, or weakly...
Damaged - not an error of any kind, I'm sorry to say.
Numismatic Pareidolia - The only cure is studying the Minting Process, and knowing what circulation-strike coins look like, from different years...
I've seen thousands of Çopper coated Off Center Zinc Cents that do not show the zinc core. Some do, some don't - depends on the Mint, the Press...
It's a 'counterpunch' - Someone punched the '7' into the coin. See the flattened area on the obverse. Definitely PMD
as above, all damage on that nickel.
Three bad, deep, rim cuts. PMD
Edge Bump/Rim Bruise
Separate names with a comma.