Oops that 1955 pic isn't suppose to be there
Looks normal for that year.
“Life is tough, but it's tougher when you're stupid.”
Looks like a worn punch. They replaced them in 1979 and again in 1981 (at least on SBAs), but I do not know if they also replaced them for other denominations.
PMD took a hit on the MM.
Roll-crimping machine damage. Definitely P.M.D.
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