Fred - you may be right!- Bruce mentioned clips on the trim rings that hold them on - and possibly those might work. From what I have learned the full wheel covers were available for 55 Cameos, but discontinued for 56 going to wheel caps and trim rings. Your observation sounds closer to the heart of this mystery because that is what my initial thoughts (the nubs on the wheels themselves) were, but I discounted that because of the indentations, holes, markings I observed on the back of the hubcap. I wonder now if those 55 (and probably early 56) issued full wheel covers covered only the "nub" variation wheel. Makes sense. Thanks Fred, that's good food for thought and further investigation. I love/hate mysteries. Dale
