Third Party Grading Services
Ebay is flooded with coins graded by a copious amount of different grading companies. Many of these companies are "basement" company, third party graders, practicing grading techniques that are suspect. Also, there are many horror stories of these companies grading counterfeit and damaged coins in their holders, but sold as authentic.
Often, the dealer company (seller) might own, or is personally affiliated with the some of these "slabbers" and this creates a conflict of interest. A circumstance that can introduce the unethical practice of starting grading companies for the sole purpose of selling more coins, at a higher premium, by assigning grades that do not meet the accepted standard for that particular grade.
When looking slabbed coins, one should always question the grade of the coin. If the holder is not from a top tier grading company, then make an offer or bid that matches the book value (BV) a couple of grades lower than the holder states. Also, look for certain other details like the coin's letter or date fonts, wrong mint mark year, etc. Try to compare the coin using an authentic example to be sure the coin in the holder is authentic.
Another detail that requires attention-anyone can buy the Coin World holder (known by the little earth symbol in the bottom left hand corner of the holder), put a coin inside, and affix a label that states any grade they chose. This is important, because there exist many examples of coins that jump in BV from grade to grade. One example of note is the 1884-S Morgan Silver Dollar. The price dramatically increases from AU58 to MS60, and this coin is difficult to find in mint state, and is one of the most over-graded coins on the market.
Disclaimer: Some of the information on this page is the opinion of the author and is not meant to accuse, discredit or cause injury or harm to any third party grading company. However, this information is based on years of experience and should serve as a guide for a potential buyer of a graded coin. Although the author attempted to use the most current and accurate information, the author is not responsible for any errors or omissions contained in this site.
Do you know of a grading company that you would like to learn about or added to this webpage? Then send an email to help@coinauctionshelp.com
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Some call them coin grading services or coin grading companies and even third party coin grading services or TPGS, but no matter what they're called, no two are alike and most of them are sub-par. Many of these TPGS don't qualify as coin graders and can't grade coins properly and even grade coins by their own standards in the name of profit. Don't be fooled by the so-called graders! Educate yourself via this website and don't buy their junk in a hunk of plastic.