Various key blank manufacturers may call this key by a different part numbers.

Some examples are:

Cole CG15
Curtis CG-16, CG16
Dominion 41E
ESP CG16
Ilco 1041T
Ilco EZ CG16
Jet CG16
JMA CHI-12D, CHI12D
Original K5
Orion YAL26
Silca YA18
Star 5CG7
Taylor 41R

S7 Fuki K5 Chicago K5 Silca Image K5 Ilco LA 41R Taylor 41E Dominion 41E HD H13 Hudson YU3 Errebi 163 Illinois 041T Osco 5CG7 Star CHG5 Kis CH22 Silca CG15 Cole Nat'l CG-16 Curtis CG16 ESP CG16 Ilco CG16 Jet CG16 Alba CG16 Jet Ditto CG16 Silca Pronto CG16 Hillman YA18 Silca YA18 HD YL58 Lotus YE59 RR 1024 B