Ford40 Here are some images of the 35 spare tire cover assembly. The assembly consists of the Spare Tire Cover Ring and the Spare Tire Cover. The ring holds the cover in place on top of the tire.
I bought what was reported to be a 1935 strap, but it didn't fit. Eventually, I decided to just go without the strap. I have a luggage rack, so the strap seemed unnecessary. Here's a photo of my final setup.
Not sure it helps any but the only quick picture I could find of our 35 with NO locking hub cap BUT of the cover on the car. The shadow hides the bottom but as stated above, nothing there to really see. But does show the fitment with the cover and the ring!!!
Found an old photo for you! Being a German made Ford, in 1935 they came with 17" tires so the gap on the outer ring is a bit wider due to the 17" (not 16") rims.