3 of the wheel covers for my 53K stay on with no problem (I followed the advice of an earlier post and bent the teeth out to "grab" better). However, my fourth hubcap is a a slightly different style and it will not stay on for love or money. Here is a picture for comparison.
The one on the right is one of the "original" wheel covers, and it stays on fine. You can see that it is not quite as "tall" as the one on the left, i.e. when placed on the wheel the teeth do not go quite as far back.
The hubcap on the left is the one that will not stay on. In addition to being "taller" than the other 3, it has 2 protruding "clips" (see picture) at the valve stem opening. This fourth hubcap is one I bought from someone advertising in the quarterly. I bent the teeth out exactly like I had for my own 3 hubcaps, but it just won't stay on. I've tried it on several different wheels and it's definitely the hubcap because my other ones stay on just fine.
Did Kaiser manufacture two separate kinds of hubcaps for the 52-55 style, or is the one on the left perhaps an aftermarket reproduction? If so, how would I be ensured of getting the correct type? And by the way, if anyone out there has the correct (one on the right) type of 52-55 hubcap, I would be very interested in buying it. I have several '51 style wheel covers to trade (I know they're more common--just saw the post), but I don't really have much use for them.