Guys,

Still thinking about this topic and found a model 3 with a letter and post card from Randall dated September 1960. The sheath is a brown button with the Randall stamp. That makes two knives from 1960 with good information that have the Randall stamp.
If Johnson came about in 1961 or 62 then these would be too early for him.

Come to think of it: We have had an awful lot of knives go through our hands over the years that have been "one year only" Johnson brown buttons. Too many in my opinion.

Gary