Those are nice switches, unless you need the click (I do).
Do you see the leaves, where the white bar separates the brass fans (the upper one has 3 fronds and the lower one is a single paddle shape)?
If you take off the "face" part and replace it, make sure that the white bar goes neatly between those 2 leaves. If they are bent, the switch can sometimes be cobbled into operation, but it will never be completely "right" again.