Shoot, that looks like sonething out of Saddam's collection. I hate inlays on my stocks.
A for effort. Nice pieces anyway.
As I understand, Roy started out using Mausers and began working on a joint venture with S&L, and had S&L start building some for him at the same time. There is an overlap where your Weatherby could have been a S&L or a Mauser (FN) at the time. Some of the reading I have done conjures that it was S&L that did the majority of the foot work and development with Norma for Roy, but the fact that both companies works together on S&L's own projects and they are both Scandinavian is the only basis Incan see for that.
Frankly, I think Weatherby would be twice the company and contender it is today if they had continued with S&L and not dealt with Sauer, but that is an opinion.