I notice many terms on this site that I have not crossed upon. Here are a few- what do they mean? Double Struck Slab
Double Struck or Double Die can be best addressed via this linK: http://www.coinresource.com/articles/doubled_dies.htm As for slab: The sealed hard plastic holder used by 3rd-party professional grading services to house coins they have determined to be authentic - has a label denoting the specific grading service, grade assigned to the coin and other information.
I think that's a good definition of a "slab". What I would define as "double struck", would be a coin that was not ejected from the dies, and was struck a second time. Proof coins are also "double struck", intentionly, in order to sharpen their details.
