Thank you for your posting of the articles.  I love Yemen jambiyas, but have yet to own one that has true silver beyond 50%.  Thus I have about given up on the Yemen jambiya, especially the purer silver with a "T" top pommel (which I enjoy). 

  Most I have seen do not have the good quality silver work for which I look and the blades are cheap.  I guess I'll have to pay "millions" for the type I search.