The quality of the photos from the person selling the pin (I am assuming this is where your photos are coming from) might cause blurring. My phone is pretty good at taking pictures (its a Pixal which top of the line camera is one of their selling points), but the Cheshire still looks slightly blurrier in the pic I just posted than when I look at my pin directly.
Posted a pic of the front since this front shot shows my pin is more yellow gold than the photo I posted of the back (its looks more yellow gold to direct viewing... closer to the front picture.)
The FAC numbers on the back of the DSSH cards are different, but not sure if this means anything at all.
Anyway, using my pictures (from a pin purchased at the release) someone else may have some advice...
In general and IMO, I am not seeing any red flags for whatever that is worth.