Not precisely rare, but perhaps low volume.
I owned two interesting Suzukis: a 1980 GS1000S (the Wes Cooley model -- technically it wasn't a replica, but rather the bike Cooley's race bike was based on) and a 1983 Katana 1100. Both had US production numbers in the 1000~1100 range. Both were stolen. Bastards. Of the two, I'd own the 1000S again to use, but not the Katana.... except to look at --- it was an uncomfortable torture rack to ride.
Pix aren't mine, just what came up in a google search.