I just bought one off of Gunbroker, unfortunately it was more of a basket case (missing the piston!) that I thought it would be so I decided not to work on it until I have weeks to waste reverse engineering a new piston. It's a KL141. The quality is a step above a similar Slavia (similar to a 618, etc).
http://www.gunbroker.com/Auction/Vie...Item=101085707
The cocking linkage is milled from solid, less stampings and more parts machined from solid generally.
Having seen the quality, I'm going to be looking for them in the future. Just with a piston...