both of the same date. One coin looks like it has wear on the leg. I wrote to some people and some said that it's an AU coin but some others are calling it UNC. Am I missing something; have grading standards slipped or are flat knees acceptable for unc coins? See below: Since this is apparently a common date of coin there is another one of the same date available. This darker one does NOT have the flat knee yet it appears to be a weaker strike. So are both of these UNC's or is only the 2nd piece an unc? Can MS seated half dollars have flat knees? I'm aware that a lot of coins are being regraded these days and are making it into higher grade holders. I was looking at a Capped Bust half: pretty ratty IMO, in a 63 holder that someone bought, imediately reslabbed as a 64 and put it back for auction 1 or 2 months later.