Just sharing what I have come across. I have personally owned at least 4 real Super Larks over the years. Not one of them had the fan shroud. This doesn't mean that they didn't have them originally and were removed. Also, because of my interest in these cars for the last 50 years, I have seen many R1 and R2 cars at car shows. Very, very, very few had the fan shroud. Based on this, I am "guessing" that the shroud was an option for these cars and many owners chose not to order one. Again, just a guess.