Greenstang

You don't show the reverse so we don't know what the mint mark is but even the lowest mintage "S" MM had 13,560,00 with the Philadelphia Mint  producing 161,116,000 so they are not rare but still a keeper.
Lahi-
Please always show both sides of the coin when posting pictures. In this case it would have enabled us to see the MM. I know you are a newbie so this is not criticism, it's just the more information you give us, the better we can help so keep asking questions. We are here to help.

Sorry but that is not even close to a genuine coin.
In the future, please shoot your coins straight on. it distorts them when shot on an angle.

In order to see doubling, a large clear photo of the area you think is doubled is required in able to see the doubling. 
Example

Lahi_
All of your posts are in the wrong forum. This forum is for registered coins. Please use the Newbie Forum at the top of the page. You will get better exposure for your posts their.

Depending on the environmental surroundings, copper can change to many different colours. Yours does not look out of the ordinary for a toned copper cent.

I'm pretty sure that what you have is a nice uncirculated 1970 D Lincoln cent. Copper reacts differently to different environments so it is possible the colouring is due to it being enclosed in the crystal ball.  Keep it in the 2x2 as it is in MS condition.

You might be better off putting this in the "Ask NGC/NGS" forum. One of the mods from NGC could probably answer your question.

You might be better off putting this in the "Ask NGC/NGS" forum. One of the mods from NGC could probably answer your question.

Just learned a new word. Always learn something new on this forum and its experts.

No it happened after the coin minted. Sometime between when the coin left the striking chamber and it got sent out to be packaged, something got on the coin.
I have seen some pretty damaged coins that ended up getting put in sets.

Machine Doubling not Doubled Die. I remember reading somewhere  that about 70% of the State and Parks coins had MD.
I don't see a two above the date, just a continuation of the stain mark on the field.
The rim is larger on one side because it is a slightly Misaligned Die, not enough for a premium.

Your not wrong Mohawk-
I did a little research and the Token first appeared in the Cello Uncirculated Mint Sets in 1984 and ran until 1998. So as you say someone has cut them out of the P & D Mint sets and used them for there own aftermarket sets.

Just learned a new word. Always learn something new on this forum and its experts.

No it happened after the coin minted. Sometime between when the coin left the striking chamber and it got sent out to be packaged, something got on the coin.
I have seen some pretty damaged coins that ended up getting put in sets.

Just learned a new word. Always learn something new on this forum and its experts.

I agree with both of the above. It happened after the coin was  minted so it would be considered damage. Certainly not worth getting graded.

Yes it is fake. The price alone should tell you.  Nobody is going to sell a coin worth in the thousands for $100.00
I just noticed that you asked the same question last week about an 1795 coin from the same seller that was also fake.
Suggest you don't entertain buying anything from this seller as it looks like he just sells counterfeits.

Those coins are from the Isle of Man and are a set of five commemorating fighter aircraft of WWII.
The sets came in Cupronickle and a Proof Set made of silver.
You did not overpay as that is about the going price for a set in Cupronickel. I think the Silver Proof coins sell for about $250.00 a set.

Not an error, PMD. Looks to me like it has taken a hit displacing some of the metal.

Noticed thee are no Canadian Gold coins on this site so I added this one.
1914 George V gold 10 dollar

Looks like DDD (Die deterioration doubling) to me. Not considered an error.

Looks like some sort of staining but whatever it is, it isn't an error as that can only happen during the striking of the coin. Just PMD

As Mohawk stated, please crop and rotate your pictures in the future. My monitor is too big to try and turn sideways.
You do have one error on your coin. It is called a "Tilted Die Strike". It happens when the striking die is not set up properly and strikes the coin on a slight angle pushing the metal into the high side. 

Looks like it was plated. Not even sure if it is genuine, maybe one of our IH experts can determine that
If it is genuine, then it was done after the coin was minted so it would be PMD.
 

Either PSD (Post Strike Damage) or PMD (Post Minting Damage) are correct and your also correct.
To help you in determining if a coin is an error, it is just as important to know what is not an error. Any dings, scrapes, flattened letters, scratches, gouges etc. are all considered damage. It is only an error if it happens during the actual striking of the coin. To see what an actual error is, I suggest looking through the following  site "error-ref.com" to see what real errors look like. This is just one of the sites available for recognizing errors.

Hess4
Please do not believe anything that R420coins has stated on this posting. You just have to read some of his other posts to know why.
There is a saying that is very appropriate here "He knows not of what he speaks".