They are all pictures of the rear. I had a look at the front ones but they looked OK, if a little rusty. Here's a picture of the front left. I'm not 100% that the thing on the left side of the image is a reluctor ring but im pretty sure it is.
Nope that's the disc ventilation. Reluctor rings are on the CV joint around the back of the hub assembly.
https://rimmerbros.com/Item--i-GRID018899
Look at item 67 in this picture on Rimmers website.