Pete,
The scales are spirograph damascus. This slipjoint is about 95% damascus. Even the two blade springs are heat treated damascus as well, in a random pattern damascus. You can see the three stainless pins in the photo, but there is also a stainless steel liner. All of Bill Ruple's knives are eloquent pieces.
I enjoy collecting knives, but a big thanks goes to Randy (nifrand), for letting me shadow him at knife shows. He has taught me alot about slipjoints, folders and knifemakers. Thanks Randy.
Jeff