Here is a list of the 3rd Generation Schrades that I know of:
3rd Generation
C627 Pen Knife; 2-5/8 "; pen & drop point blades; Cocabolo handles; nickel silver bolsters, ss blades
SS627 Pen Knife; 2-5/8 "; pen & drop point blades; brushed stainless handles;+C222 ss blades
C628 Pocket Knife; 2-5/8 "; pen, sheeps foot & drop point (main) blades; Cocabolo handles; nickel silver bolsters, ss blades
C641 Lockback; 3-1/2"; drop point blade; Cocabolo handles; nickel silver bolsters, ss blade
C642 Jack Knife; 3-1/4"; drop point & pen blades; Cocabolo handles; nickel silver bolsters, ss blades
C648 Pocket Knife; 3-1/4 "; pen, sheeps foot & drop point (main) blades; Cocabolo handles; nickel silver bolsters, ss blades
SS648 Pocket Knife; 3-1/4 "; pen, sheeps foot & drop point (main) blades; brushed stainless handles; ss blades
Dale