No sort of damage or anything have been done to the plates themselves. Yes, this is for a set. The item "Hesco 3410 Level III+ Armor Plate Set" is in sale since Wednesday, May 26, 2021.
This item is in the category "Sporting Goods\Hunting\Tactical & Duty Gear\Body Armor & Plates". The seller is "terminaters7999_6" and is located in Orlando, Florida. This item can be shipped to United States.