1983 cut off penny also weighs 2.6, 1st time i put on scale it was 2.7

I do not understand those who put this 1983 rare coin cooper. This was one coin man made and try to present as big error. I do not know if was sell but 15 years inside that person has as result. Manufactured errors are not errors, are punish by law.

 

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Easy answer: send it into a reputable grading service. Buyers will beat a path to your door.

Free advice from Zoid.

 

2.89 and 3.24 grams

2.4g-2.6 g grams

2.61-2.88 grams

.88-1.88 grams

if you collect 1909-1982 and compare the weights of each planchet you will be questioning allot which weight is most accurately the standard LOL...
Care Less Collect More!

 

1979 2.99g

 

3.5% light isn't going to win any prizes. The tolerance was +/-0.13g.

 

1983 2.94g

 

The question is what category would I label a 1979 2.99g planchet and in what category would I label a 1983 2.94 planchet? Zinc or copper or neither or both?

 

2.94+.13= 3.07 ?
2.99+.13= 3.12 ?
2.94-.13= 2.81 ?
2.99-.13= 2.86 ?
(6)
except as provided under subsection (c) of this section, a one-cent coin that is 0.75 inch in diameter and weighs 3.11 grams. The weight of the one-cent coin may vary not more than 0.13 gram. So 3.1g+.13g= 3.23, 3.1g-.13g= 2.97g so the 1979 2.99g is within tolerance.
What is the weight tolerance of a zinc penny?
The Zinc one-cent weighs approximately 2.5 grams, with a tolerance of 0.10 grams. So 1983 2.94g weight by comparison 2.5g+.10g = 2.6g 2.5g-.10g=2.4g so any zinc cent above 2.6g is outside of tolerance? 2.94g+.10g= 3.04g, 2.94g-.10g= 2.84g either way you look at the 1983 2.94g planchet it appears to be outside of the zinc cent tolerance. Now lets compare the copper planchet tolerance to see if it falls under that category or not. 2.94g+.13g= 3.07g, 2.94g-.13g= 2.81g. The weight of the 1983 2.94g planchet seems to exceed the tolerance for the zinc planchet but does not come up high enough in weight to be considered with in tolerance for the copper planchet. .02g outside of tolerance!

 

Oh boy, oh boy, oh boy as @mrweaseluv would say. I have a darn headache now. Too much math with these pennies. They are all common. Move on. Sorry, having a moment here.

 

If you're convinced that you have a 1983 1c struck on a copper planchet then get it certified. All these gyrations with tolerances and math are useless. Mint tolerances are not absolutes.

 

I just need to know which varieties could be considered not real due to their off weight-ness. One of my friends has a few plans and I would like to help her with a few designs so I can buy specimens from her to fill my books. For example if a 2.75g specimen and a 2.91g specimen and my 2.94 g 1983 were to be batched differently by design specifically by weight, all as different varieties, to be collected after her project. I feel differentiating the true parameters are essential because I don't want them counter stamped in my collection.

 

I’ve read this post 3 times. Maybe a couple beers and I’ll try again to form a response. Others will be along , eventually, to advance our knowledge

 

This is well past my 65 plus years of collecting.

 

WHY ARE YOU YELLING?!!!!!

Well, it looks like you are gone so let's move on

 

You are right! I agree a clipped planchet can be off weight it might be a copper planchet.