Question regarding the dial on my BLNR

[GWillis18]

Hello all, I apologize as this is my first time on this forum, so I am probably posting this in the wrong place. My question is concerning BLNR as it is the first black dial rolex I have ever owned and I am noticing that in the center of the dial where it looks "sunk in" if that makes sense. I know the hands are pushed on the shaft and I am assuming on my datejust being a blue dial I can't see the reflection of the light off of the dial to be able to see that the dial is pushed in slightly in the center. It is only visible under the right lighting as well. Hopefully I have explained this where you can understand and let me know if this is normal. Thanks