any answers about this 1975 penny

i have a 1975 no mint penny now I'm not interested in value it's probably nothing but it's textured and a goodish color not shiny glitter like ?????? weighs 3.11

 

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1975 Cent with no Mint Mark was minted at the Philadelphia Mint. They did not use a P MM until this year 2017

Always post a picture with your thread

 

yes sorry and I just did add image thanks for posting

 

sorry did the picture post?

 

Since it is visible, I would venture to say Yes.

 

ha ha

 

Interesting look. Not sure what caused it but I'm sure it did not leave the mint looking like that.

 

Gold spraypaint...

 

It was a chemistry experiment. https://www.sciencecompany.com/Turn-Copper-Pennies-Into-Silver-and-Gold-Pennies.aspx

 

yes seen it done but no as it's a 1975 penny that process would change the penny weight my penny is 3.11 right as it should be

 

thank you though

 

Sorry, but it's plated.
Quick answer.
1. The plating layer is very thin and won't add much weight.
2. There is a weight tolerance for newly minted cents so some may be heavier and some may be lighter.
3. Scale calibration and scale type (0.01 grams vs 0.001 grams) will also determine accuracy/precision of the last digit in your weighment.

 

After more drama than JS here I am...
Seen your coin tried to reply and after much drama & a new password
I think I can share some coins just like yours. Lets see if they will let me
after some types will go to any lengths to stay proved right. I will dig out
the others and get you better pictures. I have heard all of the same peanut gallery
comments that you are being subjected to but hey just consider the source.

 

I am back & here are a few photos The 1940 shows just how long ago the mints were playing around with experimental coatings. They have admitted to it but only when and where there is coin proof. Your 1975 and my 2 1975 coins are pretty close to enough proof. If& I hope this helps you. you don't pursue it would you consider letting me have your coin in hopes of reaching a total of 6 some day ? And I see you grinnin but hey I am old enough to know nothings free. Good luck what ever you do

 

Sorry but they are just plated cents. This experiment was done in many HS Chemistry classes to teach electrochemistry. It's a great "hands on" experiment where the student can use a cent from their pocket, and take home a cool looking reminder of the experiment to remind them of the lesson.

The coins you posted almost look like they were painted and not electroplated. The 1966 looks like environmental damage. Copper is a reactive metal and there is a lot of stuff in the world that can cause strange appearances. Hope this explanation helps

 

very muck yes exactly clear & thank you

 

Thanks for the coherent explanation, especially as that subject appeared to have all the makings of going right down the proverbial rabbit hole.

 

Any references/links?

 

What? Never heard of such a thing. That's your own theory?