I think the mint workers would mostly chuckle, that future people thinks these things are interesting or valuable. Their job was production, cranking out millions of coins, and the machinery messes up. Quality control people might feel embarrassed that certain things escaped. A handful of mint workers would be afraid of getting caught or blamed, if they had deliberately done some of it as "sport." The chief engravers would probably be upset that the workers misaligned the hubs or punched the wrong digits and tried to fix it or punched a mint mark upside down. And they all might scratch their heads about things like US Morgan
VAM guides - yeah, the dies cracked, so what? These people are tracking every single die and die state? How weird.