Question about 168.005 lume vs onyx

Hi all,

Thank you in advanced for any responses! Looking into a 168.005. I'm just curious, I've seen most of these models with either onyx markers. When I've seen lume, it's usually tritium, with the "Swiss Made T" at the 6 o'clock. The following (apologise for picture quality) doesn't have either obvious onyx or the "Swiss Made T" at 6 o'clock. The lume seems to have aged to a light green, which I've seen more often with tritium. Did any of the earlier models have tritium without the indicative "T"?

Do you guys have any concerns with the originality? Also appears to be some corrosion, particularly at 12 o'clock...

Thanks @gatorcpa ! Lume refreshed with tritium lume? Or does it look like it was replaced with some non-original stuff? Usually if the lume has been re-done, in my experience they look very very green (almost lime green)