@kolla
Some unscrupulous Chinese chip sellers re-mark old/bad chips to better/more-valuable versions.
@thread
According to the Motorola docs, samples of the last mask/revision were marked XC. (Edit: I see that D mentioned it above. sorry for the repeat...)
Good to hear everything is correct with the CPU. Maybe just add a heatsink for some passive cooling. Perhaps someone with a 2060 can post about the heat.