Yes- the "n" version has the Baffle in the back and the SN is a new series, large break from the prior version.
Another, wide-open, max-zoom.
Fall 2015 by
fiftyonepointsix, on Flickr
The 80~200/4.5 is Nikon's first zoom that really competed with the quality of the fixed-focal length lenses. I had a single-coated version as well, picked up for $20- sold to a friend for the same putting together a Nikkormat EL kit for him. The other high-quality zoom in this range is the Vivitar 70~210 Series 1 72mm version (and 1st 62mm version, but I don't have that one).
Weekend coming up- I will put some pictures up of the two lenses next to each other.