Lincoln Penny Can't See The Date Or Mint (1996 D)

It's a 1996 D in bad condition. It's stained with environmental damage. It's a spender and not an error.

to the CCF

I see a badly damaged 1996 Denver minted cent. Spend it

This is nothing the hobby would collect/value. Most odd looking coins are just post mint damage. A lot of people are mislead by online clickbait videos and tons of worthless ebay auctions wrongly being sold as rare error coins. If you want to find real error coins, you have to first know what real error coins are.

Spend some initial time at places like error-ref.com, doubleddie.com, varietyvista.com, conecaonline.org, coppercoins.com etc. to find what actual and collectable coin errors look like.

A good way to start is, for instance, separate a bunch of pennies by date. Go to varietyvista.com and, date by date, use the reference there to see what errors are known for that specific coin/mint mark. Look for those specific errors/varieties using the pictures provided. After doing this for awhile you will KNOW what an actual error looks like and not have to waste time on face value and damaged coins. :)

to CCF,
this coin is just heavily stained (cool patterns) but stained nonetheless. just a spender in a Gumball Machine.