1970 S Penny

Small or Large date?

 

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With all that crud and green on the coin it doesn’t matter. It’s damaged naturally.

 

Large date.

 

Doesn't really matter.

 

Just spare change

 

Ewwwwwwwwwwww

 

It looks like it's clipped

 

Do you have these for comparison?

 

Large date. If it pleases you that's all that matters. Copper pennies are worth a second look!

 

I just got a similar coin in change today.. large date.. my question is what causes it to turn green-ish?

 

It is generally oxidisation and occurs due to the copper reacting to exposure to oxygen

 

A prime example

 

Large cent

 

What does clipped mean

 

There are several types of clips, a straight clip, a ragged clip and the most copping is a curved clip. They all fall under the category of incomplete planchet, which is the correct term. Here’s a few examples that I own.

First Is the ragged

Now the most common, a curved. This is a 1917 Cent.
Here is a slabbed one. Notice they give a percentage of the clip.

And here is a triple clip.

Planchets are made from a sheet. As the sheet moves forward the holes are made but if the sheet doesn’t advance properly a clip will occur. Here is a chart to show that. Hopes this hopes you understand a little more.

 

Now that you have read the excellent explanation above you can understand @eddiespin 's joke.

 

finger covering the cent

 

Thank you, OK.

 

Sorry, I had a blonde moment
I get it now... finger in the way....