No plate is welded to the 2100kg tow bar of my MSE (that i can see). There is a Holden sticker on the bar itself which is visible from under the vehicle and shows towbar p/n 92284756 and tongue p/n 92201115, allowable weights, etc. There is also a towbar compliance sticker in the drivers b-pillar which is more protected from weather and easier for the driver to check
However, I do prefer the old style stamped plates on the parts themselves as the sticker will likely fade or weather in time which makes buying second hand a little less certain as to what you may be getting.
Likely I’ll never tow more than a lightly loaded box trailer on the rare occasion so a 1200kg bar would have been preferred (as I suspect the rear bumper doesn’t need to be cut during the install process and though not really sure). Unfortunately the dealer said such bars were no longer available but now I think they were telling me porkies