Cokin P-Series  Graduated ND Grey G2 Filter
Cokin Filter  P Series  Grad. Neutral Gray G2 (ND8) (0.9)  Filter.  Basically, this Gradual Neutral Grey reduces the total amount of light reaching the film, but without affecting the color balance. It restores the balance between the main subject and the foreground/background. 121 is color 2.