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<p>[QUOTE=&quot;Clawcoins, post: 3371494, member: 77814&quot;]You are actually right ... &quot;<b><u>looks like they sat on an air hose</u></b>&quot;</p><p><br /></p><p>This is a 8 micron thick copper plate on a zinc planchet.&nbsp; You will get gas bubbles, the surface gets damaged and stretched and torn especially in the early years (think 1982 to 1990ish or more).</p><p><br /></p><p>&quot;<b><u>large and misshapen</u></b>&quot; ... once again YES. This is due to the copper plated zinc planchet problems they were having, plus looks like a deteriorated die in which things start looking weird.</p><p><br /></p><p>notice has the copper &quot;skin&quot; is getting bubbly?&nbsp; The zinc underneath is corroding and pushing up the copper plating.&nbsp; <b>This is like a car that starts rusting and the paint starts swelling and deforming and chipping.</b></p><p><br /></p><p>You have described quite well, with a prime example, of the major issues with copper plated zinc core pennies. This one just has a lot of various problems.</p><p><br /></p><p>Google &quot;zinc steam&quot; for an answer to how nice (not nice) zinc is.</p><p><br /></p><p>you have to remember, these coins are made for <u>commerce</u>.</p><p>For <u>collectors they make proof sets</u>, etc.</p><p><br /></p><p>These are made from 250 to 800 per minute or 4.1 to 13.3 per second (just think of how fast that is).&nbsp; they don&#039;t really care about quality as much as they need quantity to maintain a certain cost ratio. So they switched to a cheap metal (they had a multiyear study on this solution reviewing issues, etc which is available on the USMINT.gov website) to reduce the cost of each coin.&nbsp; But the lower cost brought about many, many problems - which they knew.&nbsp; But due to gov&#039;t requirements and cost targets and production targets this design was used.</p><p><br /></p><p><br /></p><p>Also, keep in mind the reason &quot;steam&quot; is an issue is that blanks go through annealing, cleaning (in water) then through a furnace to dry them (creating steam).&nbsp; So the US MINt tests coins going through that process to make sure they can survive.&nbsp; The Cents do good enough ...</p><p><br /></p><p>Then add all the times ppl leave their change in their pockets before having them go through a washer/dryer kinda emulating the very problem they have issues with.[/QUOTE]</p><p><br /></p>

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