Die Deterioration (die wear) is a normal consequence of die use. As a die strikes hundreds of thousands of planchets at jackhammer speed, the metal on the die face is slowly rearranged. Letters and numbers often widen and grow distorted while the edges of the design become indistinct. The formerly smooth field becomes rougher and may develop radial flow lines, concentric flow lines, or an orange-peel texture. On the 2020, even with unopened BU rolls of 2020 p dimes. there are also lots of chips and die breaks everywhere as well, so apparently something must have been happening in 2020 to effect quality control, but can't think what it might be

(Pandemic)