I’ve seen these camels a number of times now at a ger camp that I stay at, Arburd Sands. Nowhere else in my travels in Mongolia since 2005 have I ever seen one with a white face like this. He’s big, too. His legs have the same kind of spotted markings. These two were part of a large group belonging to a local herder. They were grazing and hanging around quite near to the camp. I sat and sketched them one morning along with taking a lot of photos.
Here’s one of the pages of sketches I did in 2012 which includes the white-faced camel in the upper right.