That would be good except for the forged plastic cases. Now a collector has to be an expert in coins and cases. But the real answer is, as always, find a reputable dealer. Any dealer who won't take back a coin should be avoided
That what I was told was MS-64 was really MS-60.
It is pretty easy to tell the MS grades apart comparatively. Where people get tripped up is buying AU58 sold as MS62.
I like your flea market story w the Chinese counterfeit