1964 5 cents Marks in Monument

[IPGOMES130]

72F1F577-947D-4979-BC58-270FFFE5B736.jpeg AD7FBCEB-734F-4D2E-B686-0DBB3406C684.jpeg

Marks can be seen in Monument that seem odd.

[occnumis2021]

some sort of damage (pmd). a lot of weird things happen to coins.

[MintErrors]

In my opinion, there comes a point, that I cease helping people unless they start helping themselves. Quickly, I see a pattern evolving here.
^I
Otherwise, this can go on for decades. I suggest buying a book, that allows someone to learn about the minting process like a book from Margolis. The book can still be found pretty cheap. It helps people understand how dies are made and how coins are made. It helps by showing errors type coins and gives an explanation of each. I haven't got the time nor the patience to help people who want to sit back and potentially spam coins looking for answers and don't want to help themselves.

I know of two editions of this book. This is one. The other has a morgan dollar on the cover and a co author named Fred Weinberg, the King of major errors.

https://www.amazon.com/Error-Coin-En.../dp/B004YL9WA0

You have the reference, now it's finding one within budget. They might even have one out there at a library or other educational institution.