Some 1972 Eisenhower silver dollars are worth thousands of dollars! See how much your 1972 Ike silver dollars are worth here AND how much silver is in those dollar coins!
2018 Penny Value Guide - Here's a list of all 2018 penny values + Rare 2018 error pennies to look for. (Some are worth hundreds, even thousands of dollars!)
I like to buy rolls of coins (at face value) to see how many valuable coins I can find. A list of coins you should be looking for in rolls by denomination.
Post Mint Damage is ANY damage a coin has suffered after leaving the US Mint. See how damaged coins are different from error coins, plus the value of damaged coins.