The final Shirley Temple design, issued in around 1940, had the characteristics of:

-natural complexion, rosy cheeks
-eye shadow and different facial feature placement and design
-distinctly different hairstyle, with curls at the side and in front, darker in color
-longer dress (and lower waist - sometimes)
-more distinct chin and much less distinct eyelash area (not sure if this is because the previous mold had been used too often and begun to deteriorate, or if it is actually a new mold design)