I had my door handles re-chromed and was very happy with the result, same with the buttons. (I also had the mechanism pieces gold zinc plated.) It's expensive, so for a driver, reproductions "might" be better, cheaper anyway. The current reproduction buttons don't have the two keying tabs so they do wobble. You having a 67-68 type handle (64-66 and 69,70 are the same) are in a unique situation. Again, for a driver - think on it.
Jim