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<p>[QUOTE=&quot;cladking, post: 23137, member: 68&quot;]BUT it did not stop the coins from getting the black carbon specks on the obverse.&nbsp; I think that this problem started in 1982 when they started minting our pennies with a composition of 99% zinc and then coating with copper.&nbsp; </p><p><br /></p><p>This from your linked auction.&nbsp; I had guessed this but didn&#039;t expect it to be mentioned in the description.&nbsp; It is true that large numbers of these coins have a multitude of problems.&nbsp; If the copper coating isn&#039;t perfect then ambient moisture will attack the zinc and lift the plating right off.&nbsp; Many get a multitude of carbon spots and even some which are still solid will be very unattractive.&nbsp; While such coins do have value, they can not be wholesaled as BU rolls.&nbsp; The &#039;86 isn&#039;t especially bad for these problems but it is among the worst.&nbsp; If people realized how few nice looking coins there are of some of these dates the pricing would be far different.&nbsp; 1968 mint set cents are universally damaged by corrosion and carbon spots.&nbsp; &#039;84-D cents are severely damaged more than 3/4 of the time.&nbsp; There are far fewer of these sets left in existence than most assume.&nbsp; Rolls exist of all the cents but often aren&#039;t a great deal better and sometimes are not very numerous.&nbsp; Not all the denominations even exist in rolls and mint sets are virtually the sole source.[/QUOTE]</p><p><br /></p>

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