All coins listed are certified and graded coins by the thrid party grading services as follow: PCGS (Professional Coin Grading Service), NGC Numismatic Guarantee Corporation. It's these two services that realize the highest values for certified coins and PCGS leads in housing the most valuable coins in the world, in their holders.
These two services almost single handedly created the high end coin market and the subsequent values of these high grade, ultra rarities, followed. However, I urge collectors to buy the coin and not the holder's label since no company is 100% accurate or consistant and coin grading is subjective at best.
The value lists on this website are compiled from certified and conditional rarity coin sells; a conditional rarity is a coin date, mint, type, denomination, and grade or variety that is most rare for that coin type, date and denomination. I included varieties since they're considered part of the collection and must be obtained to complete the collection.
For example, the 1969-D Lincoln Memorial Cent graded MS67 Red by PCGS is rare in that grade and has sold for up to $7,475.00. So the coin must be graded MS67 RD by PCGS; however there are some conditional rarities graded by NGC as well.
If you want to find the "money" or jackpot" coin then these lists will show you what to look for. If you need help with grading then check out our photograding guide or post an image on our forum and let our experts help you with the grade to see if it's worthy of a submission to PCGS or NGC.