This is a cud does cross the rim Here’s an article written by mike diamond back in 2020 not people are aware of this cud or would mistaken as not. and also attached my stage 2 of the cud Also i have a few of the retained cuds as well showing the displacement in the vest and the design rim. One of them shown here.
Here is one of my Brazilian CUD coins. I could have sworn there were others with CUD, but I'm not finding them in my mess.