For example, attached is a 1987-D Jefferson Nickel Struck on a "Foreign" Blank How do we know this isn't a Jefferson nickel planchet, but just significantly underweight? And If grading companies want to use "foreign blank" (when they don't know what it is), why can't they include the composition on the label? This could be a big help, right? Even better, how about the term "Undetermined Planchet?" Then if the composition is the same for a Jefferson nickel, it at least can help a buyer know it "possibly" is just a regular Jefferson planchet, just underweight.