In fact, in the Pagoda Notes Model Year Changes, it says "12497 8/9/65 US cars get an emergency flasher system". And a little later on, "13324 9/22/65 US cars get a label on the emergency flasher system". My car, 13398, was evidently built just after the label was first installed. However, in place where it is located, it is almost impossible to read this label so I really wonder what difference it made.