Same as my other comment...since it does not effect the entirety of the coin and does not actually "split" the planchet in half, I am not sure if this one would qualify as a split planchet. More likely to be called a lamination error. Still a nice find.
Definitely a lamination error. Though the two are related, here's an example of a split planchet- http://www.lincolncentresource.com/Errors/Split_Planchet.html
jallan, The only distinguishing characteristic between the split planchet and a 'grind job' is that the striations in the example you listed are not exactly parallel, whereas a power grinder's are. Could these be faked with a coarse hand grinding tool? What might be other indications? Jim
Jim, I would imagine one could do a decent approximation with a course grinder, but all the split planchets I've seen still have that laminated look as if the surface consists of layers. Almost like uneven mica layers. Jody
I guess crystallization would result from the incomplete mixture, and would produce a weak interface for splitting, although I would suspect this would be quite variable. Thanks Jody
Tommy, when you get a chance start a thread. I want to see some more examples people have found. I love the Lincoln here: http://error-ref.com/Split_plan_after.html
