1952-D Penny Weight Is 2 Grams

Even if the coin is submerged you would expect it would change the toning of the coin,after using dish washing liquid it changes the color then leave it sit out and the tone will be different the reason I know that is long ago I tried to use dish washing liquid to get some stuff off a coin,after I saw how much worse it made it look I left it laid out to see if it would turn a good brown it never happened so I never used anything except water after that little lesson.the coin will tone if left out but you can tell that something had been used on it that is why a few days ago I asked about acetone because after years ago trying dish washing liquid I was afraid to use anything.

I have showed pictures,there is no pits on the coin,i have put another coin beside it to show toning is the same,and I have showed a picture of what color of tone a coin is with something that has been put on it,i have also explained the difference in the look and feel of a coin with different things that I have encountered on them,all everyone else is saying there is an acid that will shrink a coin which is fine but prove one that has no pits and has the same toning as other coins . don't accuse my coin of having it done with out showing proof of another one like it not to mention I don't know about this acid but someone else must have because they said it would leave pits on the coin and there is no pits on the coin.

I just went to place called coin galaxy it shows acid dipped coins now I know 100 percent mine is not an acid dipped coin ,plus I watched a video of another type of acid on a coin and it ate chunks away from the coin.now all I have to do is figure out if it is a split planchet or a wrong size planchet.

The surface and the lettering was different than my coin.i looked at several different types of acid dipping coins and pictures even the toning on the acid dipped coins were lighter in tone.the surface had streaks on them pictures of acid dipped coins,there is no streaking on my coin.

It has been fun,that will be the last pictures tonight I have to get my son up in 3 hours for school.i bought him a science kit last year after he gets home from school I will have him dig it out and see if that acid is in his kit,hopefully it will be so I can do an experiment.

Kevin,
You gave yourself the choice of split planchet or thinned planchet.

Why your coin is neither of these errors:
For a split planchet After strike here is a very good article with a picture from Mike Diamond you should read which will show/explain why neither of your pennies are split planchets:
http://www.coinworld.com/news/us-co...ghouse.html#

For a thinned planchet please look at what the effect is with the link below. The rim is still there, thinned planchets don't affect the diameter of a coin.
http://www.ebay.com/itm/Rare-195-BU...111847272379



Very likely explanations of your coin
People used to make pennies the same size as dimes to trick vending machines. This is 1 likely explanation for what actually happened to your coin. The other explanation is that someone acid dipped the coin (maybe for the same purpose of tricking a machine). Even if the surface of the coin looks normal or does not have pits, it does not matter at all given that the coin has been circulating for 64 years. Coins get smooth when they circulate. They also get that brown "finish" you are talking about no matter what happened. If the coin was altered 60+ years ago and has been in circulation since it will look normal in "finish"/smoothness/color today. When that coin was fresh off the mint it was a shiny gold/salmon/copper color. There are infinite ways people can manipulate a coin, there are only a handful of things that can happen at the mint.



TIPS:
We are not immediately stating your coin is not an error without reason. We are all giving you plenty of evidence. Prove that it is an error given the clues on your coin, otherwise it's PMD given the clues we have of your coin. It would really help if you had some better images, even using a cheap magnifying glass in front of your camera would help. Also get tips from the coin photography forum:
http://www.coincommunity.com/forum/...?FORUM_ID=81
Lastly, make sure your scale has enough decimal digits and can read to the hundredths place and is calibrated using a small weight you know is 1g using one of these kinds of weights:



Notice how the coins surface has nearly completely smoothed:


I spent an hour looking things up, writing, and gathering this post for you; consider reading articles and looking at the pictures I listed carefully. No one is trying to trick you

Thank you, Blue Solo for the effort you put in to your explanation and options. A definitive answer and I for one appreciate your time.

Very wise words from BlueSolo and Rackster. I understand that you thought you had something valuable, but the evidence is all there and there is no way that this is an error coin.