1977 D LMC. Black Penny? Why

You missed the humor. Most postings for error coins end up being environmental damaged coins.

 

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Yes I am sure. I could go into the story but the short of it is a friend told me he knows the gentleman that plates them locally and puts them into circulation for fun.

Personally not my idea of fun but whatever floats his boat.

 

when cleaning coins with muriatic acid, if you through a cent in it the copper will get in the solution and become a "copper wash" for the other coins nickels, dimes and quarters. Usually an uneven copper wash.

 

The way is was explained to me is that it was an electrochemical process. The gentleman would take copper plated zinc alloy pennies and dissolve the zinc alloy leaving only a thin foil like copper plating. He would then dissolve the copper plating into another solution which he would strain and add to yet another solution which he would submerge a coin into. He would then place "probes" into the final solution causing the suspended copper particles to bond to the coin.

 

I thought 'cleaning' was a term not to be referenced. 'Restoration' was the only term allowed I thought. Had I used that term? Well, I think a long line of corrections would have been hurled my way. I guess popularity or credentials has a large part to do with who is viewed as acceptable using certain terms. I have neither so I won't use it.

 

I believe I may have used the term earlier in this post, lol.

 

Well careful. Sometimes it's difficult to gauge what's acceptable and what's unacceptable.

 

As have I, lol. I have people watch for things interesting/unusual that work as clerks around town.
I have not filled the jugs to warrant another trip to coin star quite yet.

 

muriatic acid would not be in the scope of "restoration";
it would be in the scope of cleaning really bad junk off of a coin while causing other damage to the surfaces.

 

I will try to keep my terminology correct.

 

"Versus someplace much further away with better air quality."- Clawcoins. You are sure your car corrodes every time you drive past the Sulpher-spewing place. But why didn't you spend two minutes to listen to my point that your beloved car also spews pollution ??? Wherever the Wolf goes, he brings his Claws and Sharp Teeth with him !!!

 

I have a 1909 s and a 1911 s pennies that are in very good condition.both coins are black and both are really shiney.

 

I have a 1971 d nickel that weighs 2.5 grams.how can I find out what planchette it was struck on?

 

Create your own separate thread. You need pictures!

Create your own separate thread. You need pictures.

Do not create the thread over at the What's it Worth forum.. Use the Error Coins forum!

 

This is caused by old school guys cleaning pennies in a pickling solution. It contained sulfuric acid.

 

Old school coin guys and jewelers use to clean dirty pennies in a solution called pickle. It is a mild sulfuric acid. Over a long period of time the coin would blacken from sulfur that penetrated the metal and insufficient treatment afterwards.

Master Jeweler,
Harvey Mascisle

 

Old school coin guys and jewelers use to clean dirty pennies in a solution called pickle. It is a mild sulfuric acid. Over a long period of time the coin would blacken from sulfur that penetrated the metal and insufficient treatment afterwards.

Master Jeweler,
Harvey Mascisle

 

Old school coin guys and jewelers use to clean dirty pennies in a solution called pickle. It is a mild sulfuric acid. Over a long period of time the coin would blacken from sulfur that penetrated the metal and insufficient treatment afterwards.

Master Jeweler,
Harvey Mascisle

 

Old school coin guys and jewelers use to clean dirty pennies in a solution called pickle. It is a mild sulfuric acid. Over a long period of time the coin would blacken from sulfur that penetrated the metal and insufficient treatment afterwards.

Master Jeweler,
Harvey Mascisle