thanks David, it's been great fun, and just icing on the cake with finding Scott Carpenter's model 3 that led Gordon Cooper to contacting Bo Randall in 1959.
Speaking of Scott Carpenters knife, it looks like his model 3 had stag, finger grips, and a butt cap. The butt cap appears dark because it's in shadow, but you can see the spacers too. That's my opinion, perhaps someone has a different perspective.
I'm having a photo of this knife printed. Perhaps I can see a bit more clearly if it has a butt cap.