Mastercraft (Robeson)
Robeson sold a line of knives with a shield stamped “Mastercraft.” These knives had a piece of bronze attached to the tang of the blade(s) so that it rode on the spring rather than having steel-on-steel contact. Most Mastercraft knives encountered today are missing that piece of bronze. When the bronze cap is missing, the tang shows three lobes and the blade stops at four positions as it opens.