The number one coin in the above list is the 1969-S Doubled Die Lincoln Cent (1969S-1DO-001) and it was found by a disabled Vietnam Veteran who had put back thousands of cents. He hoarded cents before 1982 when he heard the mint would stop producing copper cents, and he had tens of thousands of coins.
Eventually he decided to take them abck to the bank and had already turned in several hundred when a fellow coin club member ask to buy some rolls date 1968-74 and this got his interested perked. He began looking through books and going to coin club meetings and talking to other collectors and learned about the 1969-S and 1970-S doubled dies.
So he starting searching his put together rolls of 1969-S Lincoln Cents, rolls he had hoarded from banks and was previously someone's elses pocket change, and soon he found a 69-S that looked different, "fuzzy" as he described it.
Well, the rest is history, the coin was authenticated and encapsulated by PCGS MS64 and it sold for $126,500. What if he just took all his coins back to the bank like most people do? You should always check you coins, learn about varieties and ask the experts.
If you think you have a mint error then ask us at CoinHELP! Forum where we're glad to help anyone with their coins and identify errors, varieties and help authenticate coins.