For the "historical record," thought I?d add these that I borrowed from Steve Zimmerman?s site (see below).
http://www.sharpinvestments.net/servlet/StoreFront
First is an early 1970s carving set. Steve believes it possibly late ?60s? but though it seems to have a separate ?S?, the items only have 5 spacers. I don?t know enough about carving sets to opine. (note: Found old posts that indicate that model 6 were like Bowies and often only had 5-spacers).