There is a lot of confusion over Fuji product labeling, especially in their literature, unless one is already familiar with their lenses. Brochure typos and other errors have inadvertently slipped into informational websites. The 210 WS lenses, if marked simply "W" on the OUTSIDE of the lens barrel, are going to be multicoated second-generation lenses in Copal 1 shutter. Same with "NW" or "NWS". "CMW" is the latest tweak. But lenses with writing INSIDE the barrel rim, and in Seiko shutter, are going to be single coated of older design, yet with a slightly larger image circle.
More than one Copal was used. Older ones show some chrome around the outside diameter, new ones, more black. Makes no difference functionally, unless sheer usage over time was involved. Overall condition is therefore more important. Seiko shutters are allegedly excellent too, but older still. The lens board bore size might indeed differ between Copal and the oddball Seiko.