1982D Brass planchet - Small Date - DDO

[E_V_I_L_M_E_]

1982D Brass planchet - Small Date - DDO

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[PocketArt]

They can be confusing; but that is actually a large date 1982-D Lincoln cent.  Here is a good resource.

http://www.lincolncentresource.com/smalldates/1982.html

Welcome to forum!

[RWB]

Brass usually has no tin, so all the cents from about mid-1942 to the zinc things, are brass, not bronze.

[Conder101]

17 hours ago, RWB said:

Brass usually has no tin, so all the cents from about mid-1942 to the zinc things, are brass, not bronze.

I understood that some tin was restored to the cents in beginning in 1946 at remained that way until the removed the last of the tin in 1963.  If so the 46 to 62 cents are bronze and  the 63 to 82 are brass.

[DWLange]

In the literal sense the cents of 1944-46 and 1962-82 are brass, as they do lack tin. They are commonly referred to in our field as bronze, because of the low percentage (5%) of zinc alloy. Typically, brass has 10% or more alloy and a more yellowish appearance. The error cents of 1943 are technically brass, too, as tin had been eliminated from the cent alloy by the spring of 1942. Existing planchets of the normal composition were used until the supply was exhausted, and the total number of bronze versus brass cents struck with that date is unknown. 

[RWB]

The Mint Bureau ordered that cents were allowed to contain a detectable amount of tin so that the cents complied with law. As a practical matter, that didn't happen all the time and there was no meaningful tin component from mid-1942 until the law was changed. Nobody cared, either.

[physics-fan3.14]

The Brass vs. Bronze discussion, and how it changed through history, is very interesting. 

However, I'm not sure what the OP is asking, or thinks they are showing? Do you think this is a rare or undiscovered variety? 

You appear to have a 1982 Denver minted Large date copper. This is a common and widely available variety. There are 7 varieties that are extremely common (as shown in the link P:ocketArt provided), and there is an 8th variety which is extremely rare and only recently discovered (which you do not have).