I really don't know what is so hard about ,you sell a coin to your customer he does not like it you take it back ,in the case of graded coins ,you take as good of photo,s as you can ,provide cert #,s and then still if a customer does not like it ,you take it back........... it seems if you know a coin has a problem you let the buyer know and you prevent hassles upfront, the only caveat for buyers is if you have an inexpensive graded coin for example a 2007 panda and it is graded ms67 or 68 and sells for 60/70 usd ,it is graded that way for a reason:) if it is a 69 or 70 and it has spots the seller should let the buyer know upfront and avoid hassles, every once in a while 1 can get by someone so you make the buyer happy and it is all good . This is why I try to stay away from pcgs graded coins ! they will grade spotted coins 69 and 70 ......NGC on the other hand no way ,no how! they pick up on it no matter how slight ,they do not want to pay on their guarantee:) if a coin has a slight shadow ,spot, haze etc, no matter how small it is not getting a 69 or better grade no matter how pretty the coin is. I can show you 1996 small date panda,s that you need 5x lighted magnification and you need to really ,really look for a shadow all received ms68 these are beautiful coins 8 out of 10 people would not even spot these very slight imperfection .ngc did:) NGC is looking for this with the right lighting and it is an automatic downgrade IMHO, it is their top priority when grading MCC, if a coin graded by ngc a 69 or better and it has been graded in the last 2 years ,if it has spots it developed them after grading IMHO
001 1996 CHINA PANDA SMALL DATE S10Y MS 69
002 1996 CHINA PANDA SMALL DATE S10Y MS 69
003 1996 CHINA PANDA SMALL DATE S10Y MS 68
004 1996 CHINA PANDA SMALL DATE S10Y MS 68
005 1996 CHINA PANDA SMALL DATE S10Y MS 68
006 1996 CHINA PANDA SMALL DATE S10Y MS 68
007 1996 CHINA PANDA SMALL DATE S10Y MS 68
008 1996 CHINA PANDA SMALL DATE S10Y MS 69
009 1996 CHINA PANDA SMALL DATE S10Y MS 68