PART V. Planchet Errors:
Alloy Errors:
Lamination:
Retained Lamination
Definition: A lamination error occurs when metal flakes off the surface of a coin or planchet. It is generally believed that the flaking, peeling, and cracking is due to impurities in the alloy which causes metal to separate along horizontal planes of weakness.
A retained lamination error is a flake that remains attached to the main body of the coin.
A piece of this of this 1960D small date Lincoln cent has peeled up and folded over. Another area of delaminating metal can be seen to the left of the retained lamination (indicated by white arrows).
There is little doubt that the retained piece of lamination seen on this 1959-P Lincoln cent came from the first S of STATES. The upward folded piece of lamination shows the indents of the letter S where it originated from.
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The 1941-P Lincoln cent pictured to the left has a large diagonal strip of lamination that has been retained.
Images are courtesy of Paul Ihrig.
