Also a Night VFR rating or an instrument rating with NVFR privileges (a 'standard' IR doesn't give NVFR privileges without certain experience requirements being met).
Can't remember, but is credit given for overseas instruction w.r.t. the issue of a Grade 3 instructor rating? Or must the candidate do the whole 50 hr flight training course? I seem to recall that you used to have to do the 50 hour course.