I lost one last summer on our Phaeton. The hub cover and the retaining nut will cost you just shy of $100. Looks like someone got yours. After replacement remember that they can come loose. Ours did after service on a flat tire. You need to check them for tightness on a regular basis. Just one more thing to remember.
2006 Tiffin Phaeton 40QDH
2015 Ford Cmax-sometimes toad
2008 H-D Ultra Classic Anniversary Edition
Bella the Golden Doodle/Dash ornament
Izzy the Cat
1 Wonderful Wife, Helen
3 kids, Kathy, Christine and Brian
8 grandchildren, two great grandchildren