If they haven't been minted yet - I would highly recommend the designer double-check the path of the '50 MaxCoin' at the top.  The curvature suggests that it is not centered on the coin.
( If they have been minted - I suppose they could become collector's items IF the design is corrected later )
As an aside - but this is a personal preference - the text should merely flow along the path, not be distorted according to the curvature; right now the text gets pinched toward the center.