Finds From The Hoard Pt. 2

I've found several clipped planchets, this one is a 1950:





The next two pics are of a pair of 1953 cents with identical die cracks:





An interesting struck through:





And finally, a metal shops project:

 

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I'm wondering what this defect would be called. I'ts not evident on the obverse and it doesn't really resemble a cud, or does it? It is raised and is the same height as the rim. Any thoughts?