The "K" referance only means it was made in the Kilbowie factory, there's a 201K-1, 201K-2, 201K-3; a 201K21 and 201K-23, K201K-24 and 201K-29 (spoked hand wheel). It's all the same models as the US machines, just factory designation. As far as I know, the only exclusive "K" versions are the aluminium bodied 201s.