CL
2722
The hallmark looks deep...
It is possible that they did a minor polishing on the front and leave the back alone to avoid polishing the hallmark.
Anyway, no one ever wear a box or a certificate on the wrist. As long the watch is not a stolen piece , which an archive paper will ease that fear, it is good in my book.
I will choose a great piece with no original paper and box then one that's not that great.