I have this 1982 Lincoln cent (Large Date) Zinc error coin weighing in at 2.55 grams. I see the Obverse Rim on the left is a bit cracked. Is this considered a collar clash or MAD? I also see the "W" in WE is half missing. Lastly are plating blisters indicators of a zinc coin? Also wanted to know if a 1982 Large Date Zinc penny is more common than a 1982 Small Date zinc penny?