Experienced coin dealers should recognize these marks
A mint mark is a letter or other symbol that identifies the mint at which a given coin has been made.
A bag mark is a ding, scratch, indentation, scrape, or other blemish caused by the coins bumping against each other in mint distribution bags.
A counting machine mark is a dense patch of lines caused by the rubber wheel of a counting machine. Caused when the wheel spacing was insufficient for the selected coin
A contact mark is a mark on a coin that is caused by contact with another coin or a foreign object. These are generally small, compared to other types of marks such as gouges.
A pinch mark is a mild depression usually found on a penny, these are caused by tightwads that don't want to spend money on anything and if you try to take their penny, they hold on so tight that the thumb and index finger actually compress the coin.
Comments
There might even be a few scoundrel dealers who could recognize an "easy mark" as well?
Certainly there are wannabe sellers on ebay that think they can find these.
https://en.wiktionary.org/wiki/easy_mark
"A pinch mark is a mild depression usually found on a penny,"
Does that describe today's stock market?
I forgot that one, should be on the list
Good information for new collectors... Mark my words....
Cheers, RickO
"A pinch mark is a mild depression usually found on a penny, these are caused by tightwads that don't want to spend money on anything and if you try to take their penny, they hold on so tight that the thumb and index finger actually compress the coin."
My grandma could pinch a nickel soo hard the buffalo would shi_
A remark occurs when a second blemish happens to the same location.
Magician coin tricks often leave earmarks.
Coins carried in rear pants pockets can show benchmarks.
How about trademark, bookmark, watermark, checkmark, landmark, hallmark?
Lance.
What about Marky Mark?
See http://www.doubledimes.com for a free online reference for US twenty-cent pieces
A skid mark is a sign of getting old.
Forgot One

Steve
Spiel Mark.
Worry is the interest you pay on a debt you may not owe.
"Paper money eventually returns to its intrinsic value---zero."----Voltaire
"Everything you say should be true, but not everything true should be said."----Voltaire