Henrik,
Some of them are a bit roughly done, but that one is quite 'wobbly'.
Maybe it's because it is so clean, it is more obvious. I dunno what to think about it - I'm erring on the side of it being OK - they always look 'worse' when blown up in photos.

Or.. maybe the case has had a refinish, and the numbers re-engraved, as the were really faint??

Stewart
- Heuerville