You know the famous dime struck on a nail, brockages that are so severe the coin obviously is much larger than normal, or those double struck coins that are elongated and obviously can't be counted or fit inside a roll. Here's an example I pulled off of Google of the type of error coins in question. How do these even escape inspection? I can understand missing a blank, clipped or doubled dies but coins like that I don't get how obviously deformed coins like the example below even get into circulation.
