Tudor Oysterdate 7961 (Mid-size/Boy)

[GrandMontre]

Hi all.
First question here for me, so admins, please, be merciful if anything is wrong....
This little Tudor Oysterdate 7961 looks nice but there is something unexpected on the black dial.
As you can see from the pics, the tritium dot (losen probably due to age) at 6 fall exactly on the "SWISS" mark. Is normal?
Caliber seems ok, the ref printed inside the case back, misalligned, seems not unusual in other samples...
What do you think about it?
Thank you for your reply.

PS: pics from web auction. i miss the right name in the title, it's an Oysterdate not ad Oyster Prince...