I was referring to the NW series. The NW versions are probably the most common of all.
However, Fujinon lens nomenclature is well-known to be inconsistent and confusing, The original W series had the writing on the inside of the lens barrel, on the retaining ring.
These were single-coated Plasmats, with an 80 degree image circle. Later development led to the NW series, of which multiple iterations and updates were all termed NW or NWS, inconsistently. These are identified by the lens information being “written” around the outside of the barrel. These are multicoated lenses and often had all six elements separated into different groups. The angle of coverage was usually about 76 degrees. NWS was sometimes used to designate that the lens was in shutter rather than barrel. I may have used the term too loosely in my prior response.
The CM-W series is the last of the Fujinon wide-angle plasmat series. The changes are usually not significant optically. I have W, NW, and CM-W series Fujinon lenses and, except for slightly different coverage angles, can discern little difference in practical work.
The lens that you show on the Rittreck board is an early series W, single-coated but a very good lens that should cover about 300mm or so.
All are modern, coated lenses, designed with computer assistance, and made to professional standards. Of the earlier W series, the somewhat wider angle of coverage allows lenses as short as 135mm to be used on 5x7, with limited movement.
This is probably the best overall listing of large format Fujinon lenses:
http://www.subclub.org/fujinon/byfl.htm